Patent Publication Number: US-11039705-B2

Title: Configurable cooking vessel

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     The present application is a divisional of U.S. patent application Ser. No. 16/252,815 filed Jan. 21, 2019, which is a continuation-in-part application of U.S. patent application Ser. No. 16/039,166 filed on Jul. 18, 2018, which is a divisional of U.S. patent application Ser. No. 15/422,585, filed on Feb. 2, 2017, which is a continuation of U.S. patent application Ser. No. 15/207,567, filed on Jul. 12, 2016, which in turn claims priority to each of U.S. Provisional Patent App. No. 62/194,021, filed on Jul. 17, 2015, U.S. Provisional Patent App. No. 62/196,161, filed on Jul. 23, 2015, U.S. Provisional Patent App. No. 62/206,080, filed on Aug. 17, 2015, U.S. Provisional Patent App. No. 62/303,667, filed on Mar. 4, 2016, and U.S. Provisional Patent App. No. 62/312,917, filed on Mar. 24, 2016, all of which are incorporated by reference herein in their respective entireties. 
    
    
     BACKGROUND 
     Traditional cookware typically includes a flat bottom and one or more side walls that are designed to contain a food/liquid that is to be cooked or heated. The bottom and side wall(s) of the cookware are usually made from metal, and the metallic surfaces of the cookware are heated through thermal conduction, convection, and/or induction, depending on the type of cooktop. As a result, the entire cooking surface of the cookware is heated, which in turn heats the contents of the cookware. 
     SUMMARY 
     A cooking apparatus includes a non-ferrous cooking vessel configured to receive food. The cooking apparatus also includes a ferrous cooking vessel cover that is configured for placement over a top of the non-ferrous cooking vessel. The cooking apparatus also includes one or more induction heating elements suspended from the ferrous cooking vessel cover, and a radiation source. The radiation source is configured to deliver electromagnetic radiation to the ferrous cooking vessel cover and the one or more induction heating elements such that the ferrous cooking vessel cover and the one or more induction heating elements are heated. 
     In some embodiments, the one or more induction heating elements are suspended from the ferrous cooking vessel cover into the food within the non-ferrous cooking vessel. In at least one embodiment, the one or more induction heating elements are extendable and retractable such that a position of the one or more induction heating elements relative to the food is adjustable. In other embodiments, the cooking apparatus includes one or more side induction heating elements that extend inward from a sidewall of the non-ferrous cooking vessel. 
     In some embodiments, the cooking apparatus includes a handle for the ferrous cooking vessel cover, where the handle is non-ferrous. In some embodiments, the cooking apparatus includes a hinge configured to connect the ferrous cooking vessel cover to the non-ferrous cooking vessel. The hinge allows the ferrous cooking vessel cover to be positioned in a plurality of orientations relative to the non-ferrous cooking vessel. In one embodiment, the plurality of orientations include a fully open position, a fully closed position, and at least one intermediate position between the fully open position and the fully closed position. 
     In some embodiments, the ferrous cooking vessel cover comprises a multi-piece ferrous cooking vessel cover, where each piece of the multi-piece ferrous cooking vessel cover is attached to the non-ferrous cooking vessel by a hinge. In other embodiments, the ferrous cooking vessel cover comprises a multi-piece ferrous cooking vessel cover, where pieces of the multi-piece ferrous cooking vessel cover are connected to form an accordion style cover. In yet other embodiments, the ferrous cooking vessel cover comprises a multi-piece ferrous cooking vessel cover, where each piece of the multi-piece ferrous cooking vessel cover includes a handle that allows manipulation of the respective piece. In some embodiments, the cooking apparatus includes a frame at a top of the non-ferrous cooking vessel, where the frame is configured to receive the ferrous cooking vessel cover. 
     In some embodiments, the ferrous cooking vessel cover is transformable such that a size of the ferrous cooking vessel cover is adjustable. In such an embodiment, the ferrous cooking vessel cover can include a plurality of pieces, where each of the plurality of pieces includes a hinged extension that allows each of the plurality of pieces to transform in size. Alternatively, the ferrous cooking vessel cover can include a plurality of pieces, where each of the plurality of pieces includes a slidable extension that allows each of the plurality of pieces to transform in size. 
     In some embodiments, the ferrous cooking vessel cover is transformable such that a shape of the ferrous cooking vessel cover is adjustable. In such an embodiment, the ferrous cooking vessel cover can include a plurality of pieces, where each of the plurality of pieces includes a hinged portion that allows each of the plurality of pieces to transform in shape. Alternatively, the ferrous cooking vessel cover may include a plurality of pieces, where each of the plurality of pieces includes a slidable extension that allows each of the plurality of pieces to transform in shape. 
     In some embodiments, the cooking apparatus includes one or more openings in a sidewall of the non-ferrous cooking vessel, where each of the one or more openings is configured to receive an induction heating element. In some embodiments, the induction heating element in each of the one or more openings is extendable and retractable such that an amount of the induction heating element within the non-ferrous cooking vessel is adjustable. 
     One illustrative embodiment is directed to a cooking vessel system includes a double wall cooking vessel that includes a bottom wall, an inner side wall, and an outer side wall. In an illustrative embodiment, the bottom wall, inner side wall, and outer side wall are made from a non-ferromagnetic material. The cooking vessel also includes a plurality of dividers that extend between the inner side wall and the outer side wall. The plurality of dividers form one or more slots between the inner side wall and the outer side wall. The system also includes an induction element configured to fit into a slot of the one or more slots such that the induction element is positioned at least partially between the inner side wall and the outer side wall. 
     Another illustrative cooking vessel system includes a cooking vessel that has a bottom wall and a side wall. The side wall has an inner surface, an outer surface, and an upper edge. The cooking vessel system also includes an induction element that is configured to mount to the side wall. The induction element can be of any shape, size, thickness, etc. The induction element includes a heating member, an upper edge contact member, and a lip. The heating member rests upon the inner surface of the side wall, the upper edge contact member rests upon the upper edge of the cooking vessel, and the lip rests upon the outer surface of the side wall. 
     Other principal features and advantages of the invention will become apparent to those skilled in the art upon review of the following drawings, the detailed description, and the appended claims. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Illustrative embodiments will hereafter be described with reference to the accompanying drawings, wherein like numerals denote like elements. The foregoing and other features of the present disclosure will become more fully apparent from the following description and appended claims, taken in conjunction with the accompanying drawings. Understanding that these drawings depict only several embodiments in accordance with the disclosure and are, therefore, not to be considered limiting of its scope, the disclosure will be described with additional specificity and detail through use of the accompanying drawings. 
         FIGS. 1A and 1B  depict an induction based cooking system having a non-ferrous cooking vessel with a cover of material subject to heating by induction (i.e., induction cooking cover), in accordance with at least some embodiments of the present disclosure. 
         FIGS. 2A and 2B  depict an induction based cooking system having a non-ferrous cooking vessel with a hinged induction cooking cover, in accordance with at least some embodiments of the present disclosure. 
         FIGS. 3A and 3B  depict an induction based cooking system having a non-ferrous cooking vessel with a hinged induction two-piece cooking cover, in accordance with at least some embodiments of the present disclosure. 
         FIGS. 4A and 4B  depict an induction based cooking system having a non-ferrous cooking vessel with an accordion style induction cooking cover, in accordance with at least some embodiments of the present disclosure. 
         FIGS. 5A and 5B  depict an induction based cooking system having a non-ferrous cooking vessel with a frame that is configured to receive one or more ferrous cover elements, in accordance with at least some embodiments of the present disclosure. 
         FIG. 6  depicts a transformable induction cooking cover, in accordance with at least some embodiments of the present disclosure. 
         FIGS. 7A and 7B  depict a non-ferrous cooking vessel having slots therein to receive pieces of metal subject to heating by induction, inserted or removed from the non-ferrous cooking vessel to enable heating to take place in a targeted and controlled manner (i.e., induction heating elements), in accordance with at least some embodiments of the present disclosure. 
         FIG. 8  depicts an induction smoker tray as a non-ferrous platform with induction heating elements placed in a desired pattern such that heat is generated via the induction heating elements in the desired pattern, in accordance with at least some embodiments of the present disclosure. 
         FIGS. 9A and 9B  depict a non-ferrous cooking vessel configured to receive a mobile induction heating element, in accordance with at least some embodiments of the present disclosure. 
         FIGS. 10A and 10B  depict a cut-away view of a mobile induction heating element mounted on a wall of a non-ferrous cooking vessel, in accordance with at least some embodiments of the present disclosure. 
         FIG. 11  depicts a cooking system having a non-ferrous cooking vessel comprised of a base and cover, with sections of each containing induction heating elements so that heating of food located between the base and cover takes place from the top and bottom, where the top and bottom elements are not in homologous position to enable electromagnetic radiation to pass through the base to the cover without interference (hereinafter ‘induction cooking cage’), in accordance with at least some embodiments of the present disclosure. 
         FIG. 12  depicts a cooking system having a cooking vessel with automated placement and insertion of induction heating elements, in accordance with at least some embodiments of the present disclosure. 
         FIG. 13  depicts a multi-chamber cooking package, in accordance with at least some embodiments of the present disclosure. 
         FIG. 14  depicts a system for sealing a package, container, parcel, etc. using induction heating, in accordance with at least some embodiments of the present disclosure. 
         FIG. 15  depicts a system for assembling or attaching components of a product using induction heating, in accordance with at least some embodiments of the present disclosure. 
         FIG. 16  depicts another system for assembling or attaching components of a product using induction heating, in accordance with at least some embodiments of the present disclosure. 
         FIGS. 17A and 17B  depict a food packaging system with integrated induction elements, in accordance with at least some embodiments of the present disclosure. 
         FIGS. 18A-18C  depict induction elements having non-inductive portions, in accordance with at least some embodiments of the present disclosure. 
         FIGS. 19A-19D  depict circuit switches that are triggered by induction heating, in accordance with at least some embodiments of the present disclosure. 
         FIG. 20  depicts a system of detection based on induction heating, in accordance with at least some embodiments of the present disclosure. 
         FIG. 21  depicts a test tube with an induction heating element, in accordance with at least some embodiments of the present disclosure. 
         FIG. 22  depicts an attachment mechanism with a male to female connection that is controlled via induction induced heating, in accordance with at least some embodiments of the present disclosure. 
         FIG. 23A  depicts a cooking vessel in accordance with an illustrative embodiment. 
         FIG. 23B  depicts an induction element in accordance with an illustrative embodiment. 
         FIG. 23C  is a profile view of a side wall of an induction cooking vessel with grooves in accordance with an illustrative embodiment. 
         FIG. 23D  is a profile side view of a lid with flanges for an induction cooking vessel in accordance with an illustrative embodiment. 
         FIG. 24A  is a cross-sectional profile view of a cooking vessel in accordance with another illustrative embodiment. 
         FIG. 24B  is a cross-sectional view of a cooking vessel with external hooks/protrusions in accordance with an illustrative embodiment. 
         FIG. 24C  is an enlarged view of an induction element for use with the cooking vessel in accordance with an illustrative embodiment. 
         FIG. 25A  depicts a double wall cooking vessel in accordance with in illustrative embodiment. 
         FIG. 25B  is a sectional view of a portion of an outer sidewall of a double wall cooking vessel in accordance with an illustrative embodiment. 
         FIG. 25C  depicts a stopper in accordance with an illustrative embodiment. 
     
    
    
     DETAILED DESCRIPTION 
     Embodiments of the present subject matter will now be described with reference to the above-identified figures. However, the drawings and the description herein are not intended to limit the scope of the invention. It will be understood that various modifications of the present description are possible without departing from the spirit of the invention. Also, features or operations described herein may be omitted, additional operations or features may be included, and/or features or operations described herein may be combined in a manner different from the specific combinations recited herein without departing from the spirit of the invention. 
     Induction cooking involves the use of an induction (or electromagnetic radiation) source to heat a ferromagnetic material (e.g., iron), which in turn delivers heat to food that is being cooked. The induction source can be incorporated into a stovetop, an oven, a hot plate, etc. In some implementations, the induction source is an electronically controlled coil of metal through which an alternating current flows. Current flow through the coil produces a fluctuating magnetic field, which in turn induces an electric current that flows through the ferromagnetic material. The electric current that flows through the ferromagnetic material heats the ferromagnetic material such that the food is heated. In different implementations, different forms of induction sources may be used. 
     The present disclosure relates to applications of induction heating. For example, the present disclosure relates to induction cooking. Conventional induction cooking involves use of a cooking vessel made of a ferrous or similar material, where the cooking vessel receives electromagnetic energy from an electromagnetic radiation source. The electromagnetic energy from the electromagnetic radiation source heats the ferrous cooking vessel, which in turn causes the contents of the cooking vessel to cook. The present disclosure allows for induction cooking to take place in a cooking vessel that is made of a non-ferrous material. Specifically, to facilitate induction cooking using a non-ferrous cooking vessel, ferrous elements may be positioned on, around, or under the non-ferrous cooking vessel, incorporated into walls of the non-ferrous cooking vessel, form the lid/cover of the non-ferrous cooking vessel, used in conjunction with the non-ferrous cooking vessel etc. to facilitate the induction heating of the contents of the non-ferrous cooking vessel. In such implementations, the electromagnetic radiation from the electromagnetic radiation source travels to the ferrous elements of the non-ferrous cooking vessel to heat food in a strategic and targeted manner, as described in greater detail below. 
     Referring now to  FIGS. 1A and 1B , an exemplary induction cooking system  100  is shown, in accordance with at least some embodiments of the present disclosure. Specifically referring to  FIG. 1A , the induction cooking system  100  includes a cooking vessel  110  having a cooking cover  120 . It is to be understood that the shape and size of the cooking vessel  110  and the cooking cover  120 , as shown in  FIGS. 1A and 1B , are merely exemplary. In other embodiments, the cooking vessel  110  and the cooking cover  120  may assume other shapes and sizes, as desired. Specifically, the cooking cover  120  may assume a variety of shapes and sizes corresponding to the shape and size of the cooking vessel  110 . Furthermore, in at least some embodiments, at least a portion of the cooking cover  120  is made of a ferrous material and the cooking vessel  110  is made of a non-ferrous material. 
     Contents within the cooking vessel  110  are heated using a radiation source  130 . In an illustrative embodiment, the radiation source  130  is a source of electromagnetic radiation. Furthermore, the distance between the radiation source  130  and the ferrous materials (e.g., the cooking cover  120 ) may be varied but kept within a commonly known range to effectively facilitate heating of the ferrous materials. Likewise, the positioning (e.g., orientation and angle) of the radiation source  130  relative to the ferrous materials (e.g., the cooking cover  120 ) may be varied to achieve a desired heating profile. As used herein, “heating profile” means the direction, angle, and intensity of heat that is desired to effectively and appropriately heat the contents of the cooking vessel  110 . 
     Thus, electromagnetic radiation from the radiation source  130  is used to heat the ferrous portions of the induction cooking system  100 , such as the cooking cover  120 . The cooking cover  120  then transfers the heat to the contents of the cooking vessel  110  to heat the contents therein. Since the cooking vessel  110  is made of a non-ferrous material, the radiation source  130  does not heat the cooking vessel  110 . The radiation source  130  only heats the cooking cover  120 , which is ferrous in nature. By virtue of heating the contents of the cooking vessel  110  using the cooking cover  120 , the contents (e.g., food) of the cooking vessel are strategically heated from the top, as opposed to the bottom. 
     Furthermore, in at least some embodiments and, as shown in  FIGS. 1A and 1B , the cooking cover  120  includes induction heating elements  140  suspended from the cooking cover. The cooking cover can be ferrous or at least partially ferrous in an illustrative embodiment. Alternatively, the cooking cover may be non-ferrous.  FIGS. 1A and 1B  illustrate two of the induction heating elements  140 . In alternative embodiments, additional or fewer than two of the induction heating elements  140  may be used. For example, in some embodiments, a single induction heating element may be used, while in other embodiments, three, four, five, or possibly greater number of induction heating elements may be used. Furthermore, the shape, size, and configuration of the induction heating elements  140  may vary from one embodiment to another. 
     Additionally, for a given one of the cooking cover  120 , the shape, size, and configuration of each of the induction heating elements  140  may vary from another one of the induction heating element. Likewise, the placement of each of the induction heating elements  140  may vary on the cooking cover  120 . For example, in at least some embodiments, each of the induction heating elements  140  may be positioned equidistant from one another—whether closer to the center of the cooking cover  120  or closer to the periphery of the cooking cover. In other embodiments, the induction heating elements  140  need not be positioned equidistant from one another. Rather, the positioning of the induction heating elements  140  may vary depending upon the heating profile of the contents within the cooking vessel  110  that is desired. 
     Furthermore, in some embodiments and as shown, the induction heating elements  140  may be hung from the bottom of the cooking cover  120 . Each of the induction heating elements  140  may be hung using a hook/loop attachment, magnetic attachment, other attachment mechanism, or integrally formed as a unitary piece of the cooking cover  120 . By virtue of extending downwardly from the bottom of the cooking cover  120 , the induction heating elements  140  extend into the cooking vessel  110  and, thus, may be positioned relative to the food/contents of the cooking vessel to strategically heat the contents of the cooking vessel. Additionally, in some embodiments, the induction heating elements  140  may be extendable/retractable such that they may be lowered into or raised above the contents of the cooking vessel  110 , as desired. Such an extendable/retractable feature may be implemented using a telescoping induction heating element, by a segmented induction heating element in which portions can be added and removed, and/or by a hinged induction heating element in which hinged portions of the induction heating element can be raised or lowered. 
     While the induction heating elements  140  have been shown and described as extending downwardly from the cooking cover  120 , in other embodiments, the induction heating elements may be provided to extend into the cooking vessel  110  from the sides of the cooking vessel or from the bottom of the cooking vessel. These additional ones of the induction heating elements  140  (e.g., the induction heating elements extending from the sides or bottom of the cooking vessel) may be provided in addition to or instead of the induction heating elements extending downwardly from the cooking cover  120 . 
     In at least some embodiments, the cooking cover  120  also includes a handle  150 . In at least some embodiments, the handle  150  is made from a heat resistant, non-ferrous material (e.g., wood, glass, ceramic, etc.) such that it is not directly heated as a result of the electromagnetic radiation that heats the rest of the cooking cover  120 . The size, shape, configuration, placement, etc. of the handle  150  may vary in different embodiments, and is not limited to the example configuration illustrated in  FIGS. 1A and 1B . In at least some embodiments, more than a single one of the handle  150  may be provided as well. 
     While the induction cooking system  100  described above has been described as having the cooking vessel  110  that is made of a non-ferrous material and the cooking cover  120  that is made of a ferrous material, it is to be understood that in at least some embodiments, variations are contemplated. For example, in some embodiments, only portions of the cooking vessel  110  may be made of a non-ferrous material such that the cooking vessel  110  may be partly made of a ferrous material. Likewise, in some embodiments, only portions of the cooking cover  120  may be made of a ferrous material with the remaining portions of the cooking cover made of a non-ferrous material. 
     In general, the portions of the cooking vessel  110  and the cooking cover  120  that are ferrous and non-ferrous depend upon the heating profile of the contents of the vessel that is desired. Additionally, while the induction cooking system  100  has been described from the perspective of cooking food, it is to be understood that the present disclosure (including the embodiments described below) may be used in applications other than cooking. For example, the induction cooking system  100  may be used in any application that requires heating of any contents (food or non-food) within the cooking vessel  110  by using induction heat. 
     Turning now to  FIGS. 2A and 2B , an induction cooking system  200  is shown, in accordance with at least some embodiments of the present disclosure. The induction cooking system  200  includes a cooking cover  210  attached to a cooking vessel  220  via hinges  230 . While the embodiments of  FIGS. 2A and 2B  show the cooking cover  210  as attached to the cooking vessel  220  via two of the hinges  230 , in other embodiments, additional or fewer hinges may be used. Additionally, a connection mechanism other than the hinges  230  may be used in other embodiments to movably attach the cooking cover  210  to the cooking vessel  220 . Furthermore, the hinges  230  may be made of a ferrous or a non-ferrous material. Again, and similar to the cooking vessel  110  and the cooking cover  120 , the shape and size of the cooking cover  210  and the cooking vessel  220  may vary from one embodiment to another. 
     In at least some embodiments, the cooking cover  210  is made of a ferrous material and the cooking vessel  220  is made from a non-ferrous material. Thus, the cooking cover  220  generates heat upon receipt of electromagnetic energy from a radiation source  240 . Similar to the radiation source  130 , the radiation source  240  is a source capable of generating electromagnetic radiation for heating ferrous materials. Also similar to the radiation source  130 , the positioning and orientation of the radiation source  240  may vary from one embodiment to another. Furthermore, as is known to those of skill in the art, the orientation of the ferrous material relative to the electromagnetic radiation affects the intensity of heat generated by the ferrous material (in this case the cooking cover  210 ). Thus, by virtue of varying the orientation of the cooking cover  210  relative to the radiation source  240 , the heat generated by the cooking cover may be varied to vary the heat delivered to the contents of the cooking vessel  220 . 
     Specifically, in  FIG. 2A , the cooking cover  210  is shown in an open position, such that an opening  250  is present on the top of the cooking vessel  220  revealing any contents of the cooking vessel. In this open position, the cooking cover  210  is oriented parallel to the electromagnetic radiation emitted from the radiation source  240 . On the other hand,  FIG. 2B  depicts the cooking cover  210  in a closed position such that any contents of the cooking vessel  220  are not visible from the opening  250 . In this closed position, the cooking cover  210  is oriented perpendicular to the electromagnetic radiation emitted from the radiation source  240 . Thus, the heat profile generated by the cooking cover  210  in an open position is different from the heat profile generated by the cooking cover in a closed position. In other embodiments, the hinges  230  may allow for more than a parallel and perpendicular orientation of the cooking cover  210  relative to the radiation source  240 , such that the intensity of heat may be varied as desired by the user. For example, the hinges  230  (or any other attachment mechanism that is used) may include a sufficient amount of friction to hold the cooking cover  210  in any desired position between the fully open position ( FIG. 2A ) and the fully closed position ( FIG. 2B ). The variation of heat intensity may alternatively or in addition to the movement of the cooking cover  210  be achieved by varying the position and/or orientation of the radiation source  240 . 
     Furthermore, while not shown in  FIGS. 2A and 2B , the cooking cover  210  may also include a handle similar to the handle  150  of  FIGS. 1A and 1B . Additionally, the cooking cover  210  and/or the cooking vessel  220  may include induction heating elements similar to the induction heating elements  140 . Moreover, portions of the cooking cover  210  may be made of a non-ferrous material and/or portions of the cooking vessel  220  may be made of a ferrous material in some embodiments. Also, the hinges  230  or other flexible connectors used to connect the cooking cover  210  to the cooking vessel  220  may be used in other embodiments to implement a variety of cooking covers and associated cooking vessels, each of which may be associated with a desired cooking strategy. Some of the variations of flexible connectors/hinges are shown in  FIGS. 3A / 3 B and  4 A/ 4 B below. 
     Referring specifically to  FIGS. 3A and 3B , an induction cooking system  300  having a cooking cover  310  is shown, in accordance with at least some embodiments of the present disclosure. Specifically, in at least some embodiments, the cooking cover  310  is a hinged two-piece cooking cover. The cooking cover  310 , which is made at least partially from a ferrous material, is attached to a cooking vessel  320  via hinges  330  on two sides of the cooking vessel. The cooking vessel  320  may be at least partially non-ferrous. While two of the hinges  330  are shown to connect each side of the cooking vessel  320  to the cooking cover  310 , it is to be understood that additional or fewer hinges may be used on each side. It is also to be understood that attachment mechanisms other than the hinges  330  may be used to connect the cooking cover  310  to the cooking vessel  320 . 
     Furthermore, each piece of the cooking cover  310  may be individually manipulated to achieve various configurations and orientations relative to both the contents of the cooking vessel  320  and a radiation source  340 . As discussed above, the angle of the ferrous material relative to the electromagnetic radiation from the radiation source  340  may be varied to vary the intensity of heat delivered to the cooking vessel  320 . As such, a user may control the heat delivered to the contents of the cooking vessel  320  to a desired level by varying the angular positioning of one or both of the radiation source  340  and each piece of the cooking cover  310 . 
       FIG. 3A  depicts both pieces of the cooking cover  310  in a closed position (i.e., covering the top opening of the cooking vessel  320 ).  FIG. 3B  depicts one piece of the cooking cover  310  in a closed position and the other piece in an open position such that the top opening of the cooking vessel  320  is partially open and partially closed and attains a heat profile that is at least somewhat different from the heat profile of the configuration of  FIG. 3A . Similar to the cooking cover  210 , in at least some embodiments, each piece of the cooking cover  310  is connected to the cooking vessel  320  via the hinges  330  (or other attachment mechanism) to achieve a plurality of angular positions between the fully open position and the fully closed position to adjust the heat profile. 
     In at least some embodiments, each piece of the cooking cover  310  also includes a handle  350  that may be made of a non-ferrous material to facilitate opening and closing of the respective piece of the cooking cover. Each of the two pieces of the cooking cover  310  may also be detachable/removable from the cooking vessel  320  in some embodiments. Furthermore, the two pieces of the cooking cover  310  need not be of equal size. Rather, in some embodiments, one piece of the cooking cover  310  may be of a larger size than the other piece to further manipulate the heating profile. In another embodiment, the cooking cover  310  may include a plurality of handles for stylistic effect and/or for hanging the cooking cover  310 . The handle(s) can be folded such that cooking vessels can be stacked upon one another with the cooking covers in place. The cooking cover may also be removable for storing, washing, and/or for use as a serving dish. 
     Also, in at least some embodiments, the cooking cover  310  and/or the cooking vessel  320  may have induction heating elements (e.g., similar to the induction heating elements  140  of  FIGS. 1A and 1B ) to further adjust the heat generated by the ferrous portions of the induction cooking system  300 . Furthermore, while the embodiment above has been described as each piece of the cooking cover  310  being made of a ferrous material, in at least some embodiments, only portions of one or both pieces of the cooking cover may be made of a ferrous material with the remaining portions being made of a non-ferrous material. Specifically, the combination of the ferrous and non-ferrous materials in one or both pieces of the cooking cover  310  depends upon the heating profile that is desired. Also and as mentioned above, the cooking cover  310  may be attached to the cooking vessel  320  by movable mechanisms other than hinges. 
     Turning now to  FIGS. 4A and 4B , an induction cooking system  400  is shown, in accordance with at least some embodiments of the present disclosure. The induction cooking system  400  includes an accordion style cooking cover  410  having a plurality of sections  420  that are connected to one another via hinges  430  or another attachment mechanism that allows the plurality of sections to fold in a manner described below. Specifically and as shown in  FIG. 4B , the accordion style cooking cover  410  includes two jointed portions  440  and  450 . Each of the two jointed portions  440  and  450  are attached to one side of a cooking vessel  460  (e.g., in a manner similar to the cooking cover  310  of  FIGS. 3A and 3B ). In at least some embodiments, hinges  470  may be used to movably attach each of the two jointed portions  440  and  450  to the cooking vessel  460 . In other embodiments, other mechanisms may be used to connect the two jointed portions  440  and  450  of the accordion style cooking cover  410  to the cooking vessel  460 . 
     Furthermore, each of the two jointed portions  440  and  450  may be rolled/folded toward an outside edge  480  (see  FIG. 4B ) of the cooking vessel  460  to provide an opening  490  (see  FIG. 4B ) at the top of the cooking vessel.  FIG. 4A  depicts the accordion style cooking cover  410  in a closed position and  FIG. 4B  depicts the accordion style cooking cover in a substantially open position. The opening  490  of the cooking vessel  460  may be varied by folding or unfolding the jointed portions  440  and  450  until the opening is of a desired size. By virtue of varying the opening  490  of the cooking vessel  460 , a user may adjust the position of the accordion style cooking cover  410  based on desired heat and cooking preferences (in a manner described above in  FIGS. 2A / 2 B and  3 A/ 3 B). 
     While the accordion style cooking cover  410  has been described above as having the two jointed portions  440  and  450  and each of the jointed portions having a plurality of sections  420 , other variations of the accordion style cooking cover are contemplated and considered within the scope of this present disclosure. For example, in an alternative embodiment, the accordion style cooking cover  410  may be a single hinged cover that gets rolled/folded towards a single edge/side of the cooking vessel  460 . In other embodiments, the accordion style cooking cover  410  may be made of more than two of the jointed portions  440  and  450  and each of the jointed portions may include a plurality of sections (such as the plurality of sections  420 ) connected flexibly with respect to one another. Additionally, in some embodiments, the accordion style cooking cover  410  may not be attached to the cooking vessel  460  at all and may, rather, simply rest on top of the cooking vessel. Other variations/configurations of the accordion style cooking cover  410  are also envisioned, and the description is not intended to be limited by the specific configuration of  FIGS. 4A and 4B . 
     Furthermore, in at least some embodiments and as shown, each of the plurality of sections  420  of the accordion style cooking cover  410  are made of a ferrous material. In other embodiments, less than all of the plurality of sections  420  may be made of a ferrous material with the remaining ones of the plurality of sections being made of a non-ferrous material. Likewise, in at least some embodiments, at least a portion of the cooking vessel  460  may be made from a non-ferrous material. Again, the combination of the ferrous and non-ferrous material in the plurality of sections  420 , as well as in the cooking vessel  460  depends upon the heating profile that is desired. By virtue of making at least some of the plurality of sections  420  of the accordion style cooking cover  410  of a ferrous material, the accordion style cooking cover may be heated by an electromagnetic radiation source  495 , in a manner described above. 
     Moreover, while not shown, the induction cooking system  400  may be provided with one or more handles (e.g., similar to the handle  150  of  FIGS. 1A / 1 B) and one or more induction heating elements (e.g., similar to the induction heating elements  140  of  FIGS. 1A / 1 B). 
     Turning now to  FIGS. 5A and 5B , yet another embodiment of an induction cooking system  500  is shown, in accordance with at least some embodiments of the present disclosure. The induction cooking system  500  includes a cooking vessel  510  and a frame  520  attached to or resting on a top perimeter  530  of the cooking vessel. The frame  520  is configured to receive one or more cover elements  540 , in accordance with at least some embodiments. The frame  520  itself may be made of a ferrous or non-ferrous material, depending up on the implementation and the heating profile desired. For example,  FIG. 5A  shows the frame  520  as being made of a ferrous material, while  FIG. 5B  shows the frame as being made of a non-ferrous material. 
     Furthermore, in at least some embodiments, the frame  520  may be designed to be detachable from the cooking vessel  510 , or in some embodiments, the frame may be permanently mounted on the cooking vessel. Additionally, in at least some embodiments, the cooking vessel  510  may be made of a non-ferrous material, while in other embodiments, a portion of the cooking vessel may be made of a ferrous material. Again, the ferrous/non-ferrous material combination of the cooking vessel  510  and the frame  520  depends upon the heating profile that is desired. Furthermore, the size of the frame  520  may vary from one embodiment to another depending upon the size of the cover elements  540  that the frame may receive and support. 
     In at least some embodiments, the cover elements  540  may include a combination of ferrous elements  550  that are made of a ferrous material and non-ferrous elements  560  that are made of a non-ferrous material. In other embodiments, all of the cover elements  540  may be made of a ferrous material. Further, while  FIG. 5B  shows the cover elements  540  as having two of the ferrous elements  550  and two of the non-ferrous elements  560 , this is merely exemplary. The number of the ferrous elements  550  and the non-ferrous elements  560  may vary depending upon the heating profile that is desired. Additionally, in at least some embodiments, instead of using the non-ferrous elements  560 , portions of the cooking vessel  510  may be left uncovered such that gaps may exist between the ferrous elements  550 . Alternatively, in some embodiments, a combination of the ferrous elements  550 , the non-ferrous elements  560 , and uncovered spaces may be used. 
     Furthermore, a user may arrange the ferrous elements  550 , the non-ferrous elements  560 , and the open spaces to achieve a desired heating profile. Also, the number of the cover elements  540 , their shape, their placement/orientation are all variable subject to the desired cooking style and needs of the user. Moreover, in at least some embodiments, the cover elements  540  may be detachably connected in any of a variety of ways to the frame  520 , while in other embodiments, the cover elements may be permanently attached or built-in to the frame. The cover elements  540  and particularly the ferrous elements  550  of the cover elements receive electromagnetic radiation from a radiation source  570 . The radiation source  570  is similar to the radiation source  130 ,  240 ,  340 , and  495 . 
     Additionally, as discussed above, the induction cooking system  500  may include one of more handles and/or one or more induction heating elements, as described above in  FIGS. 1A and 1B , to achieve desired heating profiles. 
     Referring now to  FIG. 6 , a cooking cover  600  is shown, in accordance with at least some embodiments of the present disclosure. Specifically, the cooking cover  600  is a transformable cooking cover. In at least some embodiments, the cooking cover  600  is made from a ferrous material. In other embodiments, at least a portion of the cooking cover  600  may be made from a non-ferrous material. In a first configuration and as shown, the cooking cover  600  is a square cooking cover  610 , and in a second configuration, the square cooking cover is transformed into a circular cooking cover  620 . Notwithstanding the transformation of the cooking cover  600  from the square cooking cover  610  to the circular cooking cover  620 , various other shapes and configurations of the cooking cover, both before and after the transformation are contemplated and considered within the scope of the present disclosure. 
     The transformation of the cooking cover  600  from one configuration to another may be accomplished in a variety of ways. For example and in one embodiment, the cooking cover  600  includes a plurality of hinged portions (not shown) that allow the cooking cover to be configured into a plurality of distinct shapes by varying the shape and size of the hinged portions (e.g., by folding/unfolding the hinged portions similar to the accordion style cooking cover  410 , discussed above). Thus, to transform the square cooking cover  610  into the circular cooking cover  620 , a hinged corner portion of each of the corners of the square cooking cover may be folded inward onto/over a remainder of the cooking cover such that circular portions of the circular cooking cover  620  are obtained. The circular cooking cover  620  may be transformed back into the square cooking cover  610  by unfolding the previously folded hinged portions. 
     Another mechanism of transforming the cooking cover  600  from one configuration to another may include sliding cover sections (also not shown). In such embodiments, the cooking cover  600  includes a plurality of cover sections capable of sliding over or under neighboring cover sections. As such, the cover sections may be layered until the desired shape/configuration of the cooking cover  600  is attained. For example, to transform the square cooking cover  610  into the circular cooking cover  620 , the corner sections of the square cooking cover  610  may be slid under or over neighboring cover sections until the cooking cover achieves a circular shape of the circular cooking cover  620 . 
     In some embodiments, the cooking cover  600  itself may be made of a plurality of layered sections such that the square cooking cover  610  may be transformed into the circular cooking cover  620  by sliding cover sections in between an upper and a lower layer of the cooking cover to form the circular cooking cover. In yet other embodiments, the cooking cover  600  may include a frame (e.g., similar to the frame  520 ). The frame may be made out of various flexible frame portions that may be molded (e.g., by varying the frame portions relative to one another) into various shapes. The frame may be designed to receive various ferrous and non-ferrous cover elements (e.g., similar to the cover elements  540 ). The cover elements may themselves be made of flexible portions that may change shape to adapt to the shape of the frame or a variety of sizes of the cover elements may be provided to accommodate the various shapes that the frame may be molded into. Other such mechanisms of varying the shape of the cooking cover  600  are contemplated. 
     By virtue of using transformable cooking covers (e.g., the cooking cover  600 ), the present disclosure allows a user to convert existing non-ferrous cooking vessels of varying shapes into induction cooking systems at a minimal cost. In addition, by targeting electromagnetic radiation on top of the cooking vessel and cover, such transformable cooking covers can be used to convert an existing ferrous cooking vessel into an induction cooking system. 
     Again, it is to be understood that while the explanation above has been with respect to the square cooking cover  610  transforming into the circular cooking cover  620 , in alternative embodiments, the cooking cover  600  may be configured from and into additional shapes, such as rectangular, triangular, hexagonal, etc. 
     Thus, the embodiments described herein allow significant flexibility to be achieved in the process of induction cooking. The cooking vessel may be non-ferrous and in any of a variety of shapes, including a cylinder, cube, parallelepiped, or other shape. By virtue of using the embodiments described herein, the cooking vessel does not need to be made from a special and expensive cooking metal. Additionally, a household (or commercial) kitchen may have a large number of cooking vessels that may be made of, for example, a heat resistant plastic. In one embodiment, these heat resistant plastic cooking vessels may be stackable and/or partially foldable. By virtue of using the embodiments described herein, foods cooked in such heat resistant plastic containers may be refrigerated or frozen in the same container in which the food is cooked (e.g., using the ferrous cooking covers described above). There is no need to transfer the food from a ferrous cooking pot to a different container, which is the norm in conventional cooking methods, thereby simplifying not only cooking, but also food storage, while reducing the numbers of dishes that need to be cleaned after cooking. 
     As discussed above, the cooking vessels described herein may be of various shapes and sizes, and may be formed of a heat resistant glass, plastic, or wood, for example. Other non-ferrous materials may also be used. In at least some embodiments, the cooking vessels may in fact include certain ferrous portions (e.g., incorporated within the cooking vessel during production). In other embodiments, existing non-ferrous cooking vessels may be transformed into induction heat suitable cooking vessels, as discussed below. The transformation of a cooking vessel unsuitable for induction cooking into a cooking vessel suitable for induction cooking may be achieved in a variety of ways. For example, in one embodiment, the cooking vessel may be configured to receive induction heating elements (e.g., ferrous pieces) at a plurality of different locations in and around the cooking vessel. In these cases, the walls of the cooking vessel may receive induction heating elements via hooks or other attachment mechanisms. The cooking vessel may also receive the induction heating elements through one or more openings and/or compartments in a wall of the cooking vessel. 
     Specifically referring now to  FIGS. 7A and 7B , a cooking vessel  700  includes induction heating elements  710 , in accordance with at least some embodiments of the present disclosure. The induction heating elements  710 , in at least some embodiments, are mounted to a wall of the cooking vessel  700 . Furthermore, in at least some embodiments, the induction heating elements  710  may be mounted to the wall of the cooking vessel  700  via hooks or any other attachment mechanism. Furthermore, the induction heating elements  710  may be permanently or detachably mounted to the wall of the cooking vessel  700 . 
     Notwithstanding the fact that the induction heating elements  710  have been shown in  FIGS. 7A and 7B  on only one wall of the cooking vessel  700 , this is merely exemplary. In other embodiments, the induction heating elements  710  may be mounted to more than one wall of the cooking vessel  700 . Furthermore, the number of the induction heating elements  710  that may be mounted to one or more walls of the cooking vessel  700  may vary from one embodiment to another depending upon the heating profile that is desired. Likewise, the shape, size, thickness, positioning, and angular orientation of the induction heating elements  710  may vary. Additionally, the induction heating elements  710  may be mounted to an interior wall of the cooking vessel  700  or alternatively or additionally, the induction heating elements may be mounted to an exterior wall of the cooking vessel. 
     In at least some embodiments, the cooking vessel  700  also includes slots  720  through which additional induction heating elements may be added to the cooking vessel to customize the heating profile of the cooking vessel.  FIG. 7A  illustrates two such induction heating slots, however, fewer or additional slots may be used in alternative embodiments. Also and similar to the induction heating elements  710 , while the slots  720  have been shown on only one wall of the cooking vessel  700 , in other embodiments, the slots may be provided one multiple walls of the cooking vessel to tailor the heating profile of the cooking vessel. Additionally, the placement, orientation, shape, and size of the slots  720  may differ in alternative embodiments. 
     In one embodiment, the slots  720  may be openings in a wall of the cooking vessel  700  into which induction heating elements may be placed into direct contact with the contents of the cooking vessel. The induction heating elements may be received within the openings of the slots  720  in any of a variety of ways that may be suitable. In some embodiments, the openings in the wall may include a door or other closable member to receive the induction heating elements. The slots  720  may, in some embodiments, also include notches in which the induction heating elements may be removably attached. In other embodiments, the slots  720  may be designed as compartments, which hold the induction heating elements. Doors may similarly be used to close the compartments such that the induction heating elements do not fall out if the cooking vessel  700  is moved. The induction heating elements may also be mounted via hooks or other attachment mechanisms in some embodiments. A combination of methods discussed above or other methods may be used to secure the induction heating elements. The embodiment of  FIG. 7A  depicts the slots  720  without induction heating elements.  FIG. 7B  depicts induction heating elements  730  placed into the slots  720 . 
     As discussed above, “induction heating elements” pieces of metal subject to heating by induction, inserted or removed from a non-ferrous cooking vessel to enable heating to take place in a targeted and controlled manner. Specifically and as discussed in greater detail above, the “induction heating elements” may be composed of a material that may facilitate heating of the “induction heating elements” using an electromagnetic radiation source. Depending upon the application for which the “induction heating elements” are used, the “induction heating elements” may be designed to be suitable for that application. For example, if the “induction heating elements” are used for induction cooking, then the “induction heating elements” may be composed of a material or be positioned in a manner that is suitable for cooking and for being around food safely without poisoning the food. 
     Furthermore, in at least some embodiments, the same induction heating element(s) that are used to cook the food may be allowed to remain in the cooking vessel when the leftover food is refrigerated or frozen. When the food is to be reheated, the cooking vessel and induction heating element(s) may be simply placed on an induction stove (or other electromagnetic radiation source) for the radiation to heat the induction heating element(s), thereby reheating the food without the need to transfer the food from one container to another. The container in which the food is stored can be non-ferrous container such as coated cardboard. The user therefore does not have to utilize a cooking vessel that may be needed for other food preparation purposes in order to have this convenience. 
     Again and discussed above, the shape, size, and material of the cooking vessel  700  may vary from one embodiment to another. Additionally, the cooking vessel  700  need not always be a container type vessel. In at least some embodiments, the cooking vessel  700  may be a pan, bowl, or other type of non-ferrous vessel, or a tray as discussed in  FIG. 8  below. Further, while not shown, the cooking vessel  700  may include one or more handles, as well as other features (e.g., venting holes) that cooking vessels typically have. Additionally, the cooking vessel  700  may have suspended induction heating element(s) within the cooking vessel, such as those discussed in  FIGS. 1A and 1B  above. 
     Turning now to  FIG. 8 , an induction smoker tray  800  is shown, in accordance with at least some embodiments of the present disclosure. The induction smoker tray  800  includes a plurality of receptacles  810  into which wood chips/pieces  820  may be placed. In one embodiment, the induction smoker tray  800  may be made of a non-ferrous material and the receptacles  810  may be made of a ferrous material, such that the wood chips/pieces  820  in the receptacles are heated with an electromagnetic heating source (not shown). Alternatively, the induction smoker tray  800  may be made of a ferrous material and the receptacles  810  may be made of a non-ferrous material. In yet another alternative embodiment, both the induction smoker tray  800  and the receptacles  810  may be made from a ferrous material or portions of the smoker tray and the receptacles may be made of a ferrous material with the remaining portions being made of a non-ferrous material. Upon application of electromagnetic radiation to the induction smoker tray  800 , the wood chips/pieces  820  are heated to generate smoke, which may be used to cook and/or impart flavor onto food. The use of the receptacles  810  allows for selective heating (i.e., some receptacles may include wood chips/pieces and others may be left empty), which is not possible in a traditional flame based smoker. 
     Notwithstanding the fact that  FIG. 8  shows the arrangement of the receptacles  810  in a certain way, this is merely exemplary. The shape, size, orientation, and placement of the receptacles  810  may vary from one embodiment to another. Likewise, while  FIG. 8  has been described as having the wood chips/pieces  820  in the receptacles  810 , in other embodiments, at least some of those receptacles may be filled with other types of materials such as flavor capsules, other foods, chemicals, etc. that impart a desired flavor to the food. Alternatively, at least a portion of the receptacles may be left empty. 
     Referring to  FIGS. 9A and 9B , yet another type of a cooking vessel  900  is shown, in accordance with at least some embodiments of the present disclosure. The cooking vessel  900  includes an induction heating element  910 . Similar to the cooking vessels discussed above, the cooking vessel  900  is composed of a non-ferrous material such that heat from an electromagnetic radiation source  920  is delivered to the contents of the cooking vessel through the induction heating element  910 . In other embodiments, the cooking vessel  900  may be a combination of ferrous and non-ferrous material in which case, heat is delivered to the contents of the cooking vessel via the ferrous portions of the cooking vessel and the induction heating element  910 . Again, the shape, size, configuration, and features of the cooking vessel  900  may vary from that shown in  FIGS. 9A and 9B . 
     With respect to the induction heating element  910  in particular, it may be a mobile induction heating element capable of being positioned in a variety of positions. For example,  FIG. 9A  depicts the induction heating element  910  in a first orientation relative to both a wall of the cooking vessel  900  and to the electromagnetic radiation source  920 .  FIG. 9B  depicts the induction heating element  910  in a second orientation relative to both the wall of the cooking vessel  900  and to the electromagnetic radiation source  920 . While  FIGS. 9A and 9B  show two orientations of the induction heating element  910 , various other orientations of the induction heating element are contemplated and considered within the scope of the present disclosure. In one embodiment, the induction heating element(s) can be automated and move by themselves such that the cook does not need to periodically stir the food. The motion of the induction heating elements will distribute heat through conduction and convection. Such automation can be achieved through the use of miniature servo-motors, through a controlled magnet, etc. 
     Additionally, in some embodiments, the induction heating element  910  is attached to the wall of the cooking vessel  900  via a hook and latch attachment (not shown) at an upper portion of the induction heating element that allows the induction heating element to rotate about a horizontal axis. As such, the induction heating element  910  is able to pivot from its position in  FIG. 9A  upward to the position shown in  FIG. 9B  and to many other configurations. In an alternative embodiment, the upper portion of the induction heating element  910  is secured to the wall of the cooking vessel  900  via a pivot rod or any other mechanism that allows the mobile induction heating element to pivot about an axis. While the description above describes motion of the induction heating element  910  about a horizontal axis, in at least some embodiments, the induction heating element may be configured to pivot about a vertical axis or at an angular axis, as may be deemed suitable. As mentioned above and discussed again below, the orientation of the induction heating element with respect to the electromagnetic radiation source may be varied to vary the heat intensity delivered by the induction heating element to the cooking vessel  900 . 
     Furthermore, the orientation of the induction heating element  910  may be varied automatically by using a spring mechanism  930  attached to the induction heating element. The spring mechanism  930  includes a spring  940  attached to the induction heating element  910 . In one embodiment, the spring mechanism  930  is configured to release the induction heating element  910  (e.g., to vary the orientation of the induction heating element) if a temperature in the cooking vessel  900  is, for example, less than a threshold temperature. The temperature in the cooking vessel  900  may be determined by a temperature sensor (not shown) in the cooking vessel, and the spring mechanism  930  may be automatically controlled by an actuator (also not shown) that is in communication with the temperature sensor. Upon receipt of a low temperature indication from the temperature sensor, the actuator may be configured to actuate the spring mechanism  930 , which in turn may then move the induction heating element  910  from the orientation of  FIG. 9A  to the orientation of  FIG. 9B  or to another orientation until the threshold temperature is attained within the cooking vessel  900 . Alternatively, the spring mechanism  930  may be manually operated to adjust the position of the induction heating element  910 . In such an embodiment, the spring mechanism  930  also includes a handle, lever, etc. such that a user may use to manipulate the spring  940  and thereby adjust the induction heating element  910  into different orientations. 
     By virtue of adjusting the orientation of the induction heating element  910  with respect to the electromagnetic radiation source  920 , the surface area of the induction heating element may be varied, thereby varying the heating intensity of the induction heating element. Specifically, the orientation of the induction heating element  910  relative to the electromagnetic radiation source  920  dictates the amount of heat generated by the induction heating element. For example, by orienting the induction heating element  910  into the position shown in  FIG. 9B , more surface area of the induction heating element is directly exposed to the electromagnetic radiation that is emitted from the electromagnetic radiation source  920  located underneath the cooking vessel  900 . Thus, the ability to manipulate the induction heating element  910  into different orientations enables a user to change the heating profile that is applied to the food and heat/cook the food more effectively and quickly. In at least some embodiments, the positioning, angle, and distance of the electromagnetic radiation source  920  relative to the induction heating element  910  may be varied to vary the heating profile. 
     Notwithstanding the specific embodiment described above in  FIGS. 9A and 9B , variations are contemplated and considered within the scope of the present disclosure. For example, while the electromagnetic radiation source  920  has been described as being situated underneath the cooking vessel  900 , in at least some embodiments, the electromagnetic radiation source may be located above and/or on one or more sides of the cooking vessel. Similarly, in other alternative embodiments, the spring mechanism  930  may be replaced by any other attachment mechanism that allows the induction heating element  910  to be manually or automatically moved into various orientations relative to the electromagnetic radiation source  920 . Additionally, when the food is cooked and a given temperature is to be maintained, rather than increased, the spring mechanism  930  may be manually or automatically retracted such that the induction heating element  910  is no longer fully facing the electromagnetic radiation source  920 . Automatic retraction of the spring mechanism  930  may be facilitated in the same manner as extending the spring mechanism by using the temperature sensor and the actuator. 
     Thus, by enabling the induction heating element  910  to be moved into a variety of orientations relative to the electromagnetic radiation source  920 , the embodiments of  FIGS. 9A and 9B  allow the heat delivered to the contents of the cooking vessel  900  to be controlled based on the amount of surface area of the induction heating element  910  that is directly exposed to the electromagnetic radiation from the electromagnetic radiation source  920 . Again, a larger exposed surface area generates more heat and, therefore, cooks food at a higher temperature, while a smaller exposed surface generated less heat and cooks food at a lower temperature. Also, while only one of the induction heating element  910  has been shown in  FIGS. 9A and 9B , a plurality of such induction heating elements may be provided on one or more walls of the cooking vessel  900  controlled by one or an additional number of the spring mechanisms, temperature sensors, and actuators. Likewise, the size, shape, and placement of the induction heating element  910  may vary from one embodiment to another. 
     Turning now to  FIGS. 10A and 10B , an alternate mechanism of varying the orientation of the induction heating element of  FIGS. 9A and 9B  is shown, in accordance with at least some embodiments of the present disclosure. Specifically,  FIGS. 10A and 10B  depict a cut-away view of an induction heating element  1000  mounted on a wall  1010  of a cooking vessel  1020 , in accordance with at least some embodiments of the present disclosure. Only portions and features of the cooking vessel  1020  that are necessary for a proper understanding of the present embodiment are shown in  FIGS. 10A and 10B . Nevertheless, as discussed with respect to  FIGS. 9A and 9B  above, the cooking vessel  1020  includes one or more temperature sensors, one or more actuators, and at least one electromagnetic radiation source for heating the induction heating element  1000 . Likewise, while a single iteration of the induction heating element  1000  is shown in  FIGS. 10A and 10B , multiple ones of the induction heating element may be provided on one or more walls of the cooking vessel  1020 . 
     Similar to the embodiments of  FIGS. 9A and 9B , the induction heating element  1000  is a mobile induction heating element capable of being oriented in varying positions relative to the electromagnetic radiation source, not shown. The induction heating element  1000  is attached to the wall  1010  of the cooking vessel  1020  via a hook and latch attachment  1030  at an upper portion of the mobile induction heating element. The hook and latch attachment  1030  allows the induction heating element  1000  to rotate about a horizontal axis. In the embodiments of  FIGS. 10A and 10B , a screw  1040  is used to manipulate the induction heating element  1000  into a desired orientation.  FIG. 10A  illustrates the induction heating element  1000  in a retracted position, and  FIG. 10B  illustrates the induction heating element in a partially extended position. The screw  1040  may be manually or automatically manipulated, depending on the embodiment, in a manner similar to that described above in  FIGS. 9A and 9B  using the temperature sensor and the actuator. 
     In other embodiments, other mechanisms of controlling the orientation of the induction heating element  1000  may be used. For example, in some embodiments, instead of using the screw  1040 , control of the induction heating element  1000  may be effected through a bimetallic strip, through an electronic arm in communication with a temperature (or other) sensor, etc. Furthermore, a combination of the mechanisms described above may be used within a single embodiment of the cooking vessel  1020 . 
     Referring now to  FIG. 11 , yet another embodiment of a cooking vessel  1100  is shown, in accordance with at least some embodiments of the present disclosure. Specifically, the cooking vessel  1100  is configured as a cooking cage  1110  having a cooking bar  1120  upon which food  1130  may be skewered or otherwise secured for cooking. While the cooking bar  1120  has been shown as being secured or otherwise mounted to the side walls of the cooking cage  1110 , in other embodiments, the cooking bar may assume other configurations. For example, in some embodiments, the cooking bar  1120  may extend upwardly or downwardly parallel or substantially parallel to the side walls of the cooking cage  1110 . Likewise, the cooking bar  1120  need not always be a straight bar. The cooking bar  1120  may be curved, spiral, or assume other shapes and sizes to accommodate varying types of food items. In at least some embodiments, the cooking cage  1110  may be provided with a variety of combinations and configurations of cooking bars such that an appropriate one of the cooking bar  1120  may be used within the cooking cage depending upon the food that is to be cooked. 
     Additionally, the cooking bar  1120  may be stationary, or it may rotate, depending on the embodiment. In alternative embodiments, the cooking bar  1120  may be suspended in the cooking cage  1110  in a variety of ways, such as via hooks mounted to the cooking cage. Furthermore, in at least some embodiments, the walls of the cooking cage  1110  may be designed to expand and contract, either manually or electrically. In such embodiments, the walls of the cooking cage  1110  may be formed into an accordion shape that may be easily compressed to reduce the size of the cooking cage, or expanded to increase the size of the cooking cage. Alternatively, the cooking cage  1110  may have walls which slide horizontally into each other to further increase the flexibility of the cooking vessel  1100 . With expandable or contractable configurations of the cooking cage  1110 , the cooking bar  1120  may be configured to expand or contract as well. The cooking bar  1120  may be made to expand or contract in any of a variety of ways. For example, the cooking bar  1120  may be configured as portions of rods that slide within one another to vary the length thereof or the cooking bar may be made as an accordion structure itself, so it may be stretched or compressed as desired. Other mechanisms of varying the length of the cooking bar  1120  may be used in other embodiments. 
     Furthermore, in at least some embodiments, in addition to or instead of the cooking bar  1120 , the food  1130  may be supported by a ferrous or non-ferrous food tray (not shown), depending on the amount of desired heat. Liquids may also be cooked in this way using the cooking cage  1110 , and the cooking cage may be configured such that the liquid is heated from any desired direction. Foods and liquids may also be cooked together, and in some embodiments the food may be held in a non-ferrous container inside the cooking cage  1110  or in a heat resistant bag that may be flexible. 
     The cooking cage  1110  also includes upper ferrous strips  1140  secured or otherwise attached to an upper portion of the cooking cage. The upper ferrous strips  1140  are configured to generate heat and heat the food  1130  from the top. In addition to the upper ferrous strips  1140 , in at least some embodiments, the cooking cage  1110  also includes lower ferrous strips  1150  that are secured or otherwise attached to a bottom portion of the cooking cage for generating heat to heat the food  1130  from the bottom. The upper ferrous strips  1140  and the lower ferrous strips  1150  generate heat by virtue of receiving electromagnetic radiation from an electromagnetic radiation source  1160 . In addition, the upper and lower ferrous strips are not homologous (i.e., the top and bottom strips do not line up with one another exactly). If the top and bottom strips were lined up exactly on top of one another, the electromagnetic radiation would be absorbed by the lower strips and would not reach the upper strips. 
     Similar to the cooking bar  1120 , the upper ferrous strips  1140  and the lower ferrous strips  1150  may assume various different configurations. For example, the shape, size, thickness, angle, and orientation of each of the upper ferrous strips  1140  and each of the lower ferrous strips  1150  may vary from one embodiment to another, depending particularly upon the heating profile that is desired. Additionally, while in the present embodiment only two of the upper ferrous strips  1140  and two of the lower ferrous strips  1150  have been shown, this is merely exemplary. In other embodiments, more or less than two ferrous strips may be used in both the upper ferrous strips  1140  and the lower ferrous strips  1150 . Furthermore, in at least some embodiments, additional ferrous strips may be provided on the side walls of the cooking cage  1110 . The walls of the cooking cage  1110  are non-ferrous in at least some embodiments. The walls of the cooking cage  1110  may also include slots, brackets, etc. to hold the additional ferrous strips such that the food  1130  may be heated from the side. 
     Additionally, extendable heating elements (e.g., such as those described in  FIGS. 1A and 1B  above) may be provided within the cooking cage  1110  and/or a mobile induction heating element (such as those described in  FIGS. 9A / 9 B and  10 A/ 10 B above) may be used. Moreover, in at least some embodiments, only either the upper ferrous strips  1140  or the lower ferrous strips  1150  may be used. Furthermore, in at least some embodiments, the upper ferrous strips  1140  and the lower ferrous strips  1150  may include a non-ferrous (or non-metallic) side that faces away from the food  1130 , and a ferrous side that faces the food. In such an embodiment, the non-ferrous side may be clad with a heat resistant material. One or both of the upper ferrous strips  1140  and the lower ferrous strips  1150  may also include a non-ferrous lip, grip, protrusion, etc. such that the ferrous strips may be better handled when hot. Thus, a variety of configurations of the ferrous strips are contemplated and considered within the scope of the present disclosure. Additional handles to lift or move the cooking cage  1110  may be used as well in some embodiments. 
     In at least some embodiments, the cooking cage  1110  may be provided with cooking covers such as those described in  FIGS. 1A-6  above. These cooking covers may be in addition to or instead of the upper ferrous strips  1140  and/or the lower ferrous strips  1150 . 
     Furthermore, in at least some embodiments, the upper ferrous strips  1140  and the lower ferrous strips  1150  may be separated from one another by a non-ferrous material  1170 . For example, in at least some embodiments in which the non-ferrous material  1170  is used, the non-ferrous material is placed between the upper ferrous strips  1140  such that the cooking cage  1110  has a solid top surface. Similarly, the non-ferrous material  1170  is placed between the lower ferrous strips  1150  such that the cooking cage  1110  has a solid bottom surface. In alternative embodiments, the top and/or bottom of the cooking cage  1110  may be at least partially open. 
     As discussed above, in embodiments in which a cage structure is used, the upper ferrous strips  1140  are offset (i.e., not directly on top of) relative to the lower ferrous strips  1150 . By virtue of offsetting the upper ferrous strips  1140  from the lower ferrous strips  1150 , electromagnetic radiation from the electromagnetic radiation source  1160  may pass in between the lower ferrous strips and make contact with the upper ferrous strips, thereby making the heating of the upper ferrous strips more effective. 
     Additionally, in one embodiment, the bottom of the cooking cage  1110  has a frame into which the lower ferrous strips  1150  any non-ferrous material  1170  are placed or secured. As discussed above, the non-ferrous material  1170  between the lower ferrous strips  1150  allows electromagnetic radiation to pass right through to the upper ferrous strips  1140  that are placed directly above the lower non-ferrous material and thereby offset from the lower ferrous strips. The upper ferrous strips  1140  may also be mounted in a frame at the top of the cooking cage  1110 . Thus, by providing the upper ferrous strips  1140 , the lower ferrous strips  1150 , and the cooking bar  1120 , the food  1130  may be effectively and quickly cooked within the cooking cage  1110 . 
     Turning now to  FIG. 12 , an induction cooking system  1200  is shown, in accordance with at least some embodiments of the present disclosure. Specifically, the induction cooking system  1200  includes a non-ferrous cooking vessel  1210  having an automated placement of one or more induction heating elements  1220 . The cooking vessel  1210  may be made partially or entirely from a non-ferrous material. In at least some embodiments, the induction heating elements  1220  are selectively inserted into the cooking system  1200  to provide more heat. The induction heating elements  1220  may be manually or automatically inserted into a slot  1230  in the wall of the cooking vessel  1210 . In an embodiment in which the induction heating elements  1220  are automatically inserted, a temperature sensor (not shown) may be used in conjunction with an, also not shown, automatically controlled arm (or other actuator) that inserts/removes the induction heating elements based on a sensed temperature within the cooking system  1200 . 
     For example, when inserted into the wall of the cooking vessel  1210 , the induction heating elements  1220  may absorb electromagnetic radiation from an electromagnetic radiation source  1240  to increase a temperature of the cooking vessel based on a temperature reading that is below a desired value. Similarly, the induction heating elements  1220  may be removed from the cooking vessel  1210  to maintain a desired temperature or reduce the temperature if the temperature gets too high. 
     Notwithstanding the fact that in the present embodiment, a single one of the induction heating elements  1220  inserted into a single one of the slot  1230  has been shown, this is merely exemplary. Rather, in other embodiments, multiple smaller ones of the induction heating elements  1220  may be inserted into the slot  1230 . Similarly, multiple numbers of the slot  1230  may be used in some embodiments, with each of the slots having one or more of the induction heating elements  1220 . Likewise, the size, shape, angle, and orientation of the induction heating elements  1220  and the slot  1230  may vary in some embodiments as well. Also, while the slot  1230  and the induction heating elements  1220  have been shown on only one wall of the cooking vessel  1210 , in at least some embodiments, slots and induction heating elements may be provided on multiple walls of the cooking vessel. Additionally, when multiple numbers of the slot  1230  holding multiple numbers of the induction heating elements  1220  are used, the size, shape, angle, and orientation of each of the induction heating element may vary to achieve the desired heating profile. Furthermore, in such cases, the insertion and removal of the induction heating elements  1220  may be either manual, automatic, or a combination of both. In some embodiments, additional heating elements and handles (such as those discussed in  FIGS. 1A-1B ) may be provided as well. 
     Thus, using the embodiments described herein, it is, again, apparent that a metal cooking vessel (e.g., ferrous cooking vessel) is no longer necessary to take advantage of induction cooking. Rather, non-ferrous containers and cooking vessels having automated and/or manual mobility aspects allow for much greater flexibility and control in induction cooking. Opening and closing of induction elements in the top or base of a container also allow for adding ingredients, placing ferrous and/or non-ferrous sections aside, etc. In addition, heating and then simmering, and other combinations, for example, become possible in the same container (i.e., while multiple containers are being heating via a single electromagnetic radiation source) without the need for multiple time-consuming transfers from one pot to another. Additionally, stirring while heating may become a simple automatic process since the non-ferrous container is more amenable to the addition of electrically controlled devices. 
     The embodiments described herein make possible targeted heating and cooking in a variety of circumstances outside of conventional food preparation. For example, a commercial food manufacturer may have a food product that consists of two or more distinct types of food, one or more of which are to be cooked and one or more of which are not to be cooked. Instead of preparing the foods separately and then packaging them in a multi-step process, the embodiments described herein make it possible to place ingredients/food into separate sections of a non-ferrous package, with the ingredients/food to be cooked in a compartment (or compartments) having a readily removable ferrous element attached thereto. Passing the package over an electromagnetic radiation source results in cooking of the desired food component(s), and not cooking the other food product(s). An assembly line of such packages may result in significant savings for the food manufacturer. 
     Turning now to  FIG. 13 , a multi-chamber cooking package  1300  is shown, in accordance with at least some embodiments of the present disclosure. In at least some embodiments, the multi-chamber cooking package  1300  includes a first chamber  1310  that includes food which is not to be cooked, and a second chamber  1320  that includes food which is to be cooked. It is to be understood that although the multi-chamber cooking package  1300  has been shown as having only two chambers (e.g., the first chamber  1310  and the second chamber  1320 ), in other embodiments, the number of chambers may vary. Depending upon the number of chambers desired, the multi-chamber cooking package may have only a single chamber or possibly even greater than two chambers. Further, the shape and size of each chamber within the multi-chamber cooking package  1300  may vary from one embodiment to another. Likewise, the overall shape and size of the multi-chamber cooking package  1300  may vary as well. 
     For facilitating the cooking of food in the second chamber  1320 , the second chamber includes an induction heating element  1330  attached or otherwise mounted thereto. In at least some embodiments, the induction heating element  1330  is detachable from the second chamber  1320  after the contents of the second chamber have been cooked. Notwithstanding the fact that in the present embodiment, a single one of the induction heating element  1330  has been shown attached/mounted to the second chamber  1320 , in other embodiments, more than one of the induction heating elements may be provided on one or more walls of the second chamber. Furthermore, the shape, size, angle, and orientation of the induction heating element  1330  may vary from one embodiment to another. Also, while the induction heating element  1330  has been shown as being attached/mounted to an outer surface of the wall of the second chamber  1320 , in some embodiments, the induction heating element may be mounted to an inner surface of the wall of the second chamber. 
     Moreover, in at least some embodiments, an induction heating element may be provided on the first chamber  1310  as well when the first chamber includes contents that are to be cooked. The shape, size, orientation, number, angle, and area of attaching/mounting the induction heating element on the first chamber  1310  may vary from one embodiment to another. 
     By virtue of providing the induction heating element  1330  on the second chamber  1320 , as the multi-chamber cooking package  1300  travels down a conveyor belt  1340  of an assembly line  1350 , the multi-chamber cooking package may be made to pass over (or under, or by) an electromagnetic radiation source  1360  that heats the induction heating element  1330 , thereby cooking the contents of the second chamber  1320 . In alternative embodiments, multiple electromagnetic radiation sources may be used at a number of different locations and orientations on the conveyor belt  1340  relative to the multi-chamber cooking package  1300  to achieve a desired heating profile. The electromagnetic radiation source  1360  may itself be mobile or stationary. Thus, in some embodiments, the multi-chamber cooking package  1300  may be positioned in at least some embodiments, stationary position, while the electromagnetic radiation source  1360  may move relative to the multi-chamber cooking package to cook contents within the multi-chamber cooking package. 
     The multi-chamber cooking package of  FIG. 13  may be extended virtually in any manufacturing process (both cooking and non-cooking applications) in which heat is to be applied in a targeted manner. For example,  FIG. 14  depicts a system  1400  for sealing a parcel  1410  using induction heating, in accordance with at least some embodiments of the present disclosure. The parcel  1410  can be a package, container, or other receptacle. In at least some embodiments, the parcel  1410  is not made of a ferrous material. Rather, the parcel  1410  includes a seam  1420  (or opening) that is to be sealed by a heat activated adhesive or plastic placed on the seam. 
     To seal the parcel  1410  using induction heating, an induction heating element  1430  is placed on the seam  1420  and particularly, over the heat activated adhesive or plastic on the seam. As the parcel  1410  moves along a conveyor belt  1440  of an assembly line  1450 , the parcel passes through (e.g., over, under, or by) an electromagnetic radiation source  1460 , which causes the induction heating element  1430  to heat up and melt/activate the heat activated adhesive or plastic on the seam  1420 , thereby sealing the seam of the parcel. 
     As the parcel  1410  moves further down the conveyor belt  1440 , the heat activated adhesive or plastic cools and hardens forming a permanent seal over the seam  1420 . In at least some embodiments, the induction heating element  1430  may be removed from the seam  1420  to be re-used, or left on, depending on the implementation. 
     Notwithstanding the embodiment of the parcel  1410  shown in  FIG. 14  above, many variations to the parcel are contemplated and considered within the scope of the present disclosure. For example, the shape and size of the parcel  1410  may vary. Likewise, the orientation of passing the parcel  1410  on the conveyor belt  1440  may vary. For example, while the present embodiment shows the parcel  1410  moving on the conveyor belt  1440  with the seam  1420  facing upward away from the conveyor belt, in other embodiments, the seam  1420  may be facing in other directions, including facing towards the conveyor belt. Also, the shape, size, and thickness of the seam  1420  may vary from one embodiment to another. Additionally, multiple numbers of the seam  1420 , with each of the seams having an induction heating element thereon to seal the parcel  1410  may be used in other embodiments. Intentional gaps (e.g., for venting) may be left within the seam  1420  by strategically placing the induction heating element  1430  on the seam. Also, similar to  FIG. 13 , the electromagnetic radiation source  1460  may be stationary or mobile. It is to be understood that all items to be joined and sealed are non-ferrous in nature such that the electromagnetic radiation does not heat them as well. 
     The embodiments of  FIGS. 13 and 14  may also be extended to an object that is to be glued/adhered in a particular spot with another object, or to any assembly line involving a spot or sector to be heated in a targeted manner. The processes may be used to adhere/connect both small and large objects. For example, a first body may need to be permanently adhered to a second body. Traditionally, such an operation would have been done by hand, with the first body lifted up, an adhesive, etc., applied to the first body, and first and second bodies brought into contact with one another to be secured. Nowadays, such an operation may be carried out by a number of complicated and expensive robotic machines. Even using modern machines, the first body must be lifted and, after the adhering/affixing operation takes place, replaced. In some circumstances, movement of the first body relative to the second body may be harmful to the contents and/or composition of the first body. Using the embodiments described herein, an induction heating element may be placed at an interface between the first body and the second body to enable the adhering/affixing process to take place in a predictable, controlled manner. Such a process is less costly than traditional methods and results in less disturbance to the first body, which is affixed to the second body. The adhering process may be the result of using induction heat for fusing plastic surfaces to one another, activating a dry glue placed between the two surfaces, melting a solder between the two surfaces, etc. One such embodiment is described in  FIG. 15  below. 
     Turning now to  FIG. 15 , a system  1500  for assembling components of a product  1510  using induction heating is shown, in accordance with at least some embodiments of the present disclosure. The product  1510  includes a first body  1520  that is to be attached to a second body  1530 . An induction heating element (not visible) is placed at the interface between the first body  1520  and the second body  1530 . Specifically, in some embodiments, the induction heating element is placed to cover only a portion of the interface, and the remainder of the interface is covered by an adhesive or other material such as glue, plastic, solder, etc., to facilitate the attachment of the first body  1520  to the second body  1530  at the interface. In other embodiments, the induction heating element is placed to cover substantially all of the interface between the first body  1520  and the second body  1530 . The portion of the interface that is covered by the induction heating element may be dependent upon the shape, size, number, angle, and orientation of the induction heating element, as well as the shape and size of the first body  1520  and the second body  1530 , and the type of adhesive/solder/plastic used in the interface to attach the first body to the second body. 
     By virtue of using the induction heating element, the first body  1520  may be attached to the second body  1530  using induction heat. Specifically, the product  1510  is moved down a conveyor belt  1540  of an assembly line  1550  and as the product passes through (e.g., over, under, or by) an electromagnetic radiation source  1560 , the electromagnetic radiation source heats the induction heating element. The heated induction heating element in turn melts/heats the adhesive or other material at the interface of the first body  1520  and the second body  1530  such that the first body is attached to the second body. 
     Again and as discussed in  FIG. 14  above, variations to the product  1510 , the first body  1520 , the second body  1530 , the conveyor belt  1540 , and the induction heating element are contemplated and considered within the scope of the present disclosure. For example, the conveyor belt  1540  may be linear or non-linear (e.g., curved or circular), depending on the implementation. Furthermore, while the present disclosure has been described as having the first body  1520  and the second body  1530 , in other embodiments, more than two components of the product  1510  may be attached using the disclosure herein. Furthermore, the embodiments of  FIG. 15  may be extended to a multiplicity of affixing/adhering operations, to processes involving human and/or robotic actions, to different methods of controlling the movements, at a variety of speeds, etc. 
     Often it is necessary to add heat to a glue joint to disassemble an object. The embodiments may also be used to sever connections between bodies in alternative embodiments. For example, two items held together by solder or glue can be separated by placing an induction element at the joint and training an electromagnetic source on the element. Such a process is much safer than a flame. Also, the electromagnetic radiation source  1560  may be mobile or stationary. For example, in one embodiment, the electromagnetic radiation source can be a handheld battery powered unit. As noted above, use of a flame is dangerous and can damage the object being disassembled. In practice, a ferrous heating element is placed adjacent to the joint or encompassing the joint. Placing the radiation source proximate to the joint will help to ensure that only the joint is heated. Should there be ferrous metal near the joint, the process can be modified to avoid heating the nearby ferrous metal. Specifically, a long ferrous heating element can be used, with one end of the long ferrous heating element touching or encompassing the joint and the other end of the long ferrous heating element proximate to the radiation source. In such an implementation, the radiation source is more distant from the joint and the radiation can be targeted to heat the far end of the heating element. The remainder of the heating element (including the portion in contact with the joint) will heat via conduction such that the joint is heated for disassembly. In general, the above approaches can be used whenever something has to be melted. 
     Referring now to  FIG. 16 , another implementation of an affixing operation is shown, in accordance with at least some embodiments of the present disclosure. Specifically, the affixing operation of  FIG. 16  includes a sheet of carbon fiber material to which a device made of hard plastic is to be affixed. Ferrous metal screws (or other fasteners) are placed into prepared holes/openings, and the product is passed by an electromagnetic radiation source that expands the screw, melts the plastic and carbon fiber, and creates a permanent interlocking interface between the carbon fiber material and the device. These concepts may be extended to implementations in which the product is on a conveyor belt, in which the product is stationary and the electromagnetic radiation source passes over, under, or by the product either manually or automatically, where the electromagnetic radiation source and/or the product are moved in accordance with a control program, etc. In another embodiment, the affixing operations can be used in the building industry in situations where one surface is to be affixed to another surface. For example, small heating elements can be placed together with heat activated adhesives or adhesives enclosed in readily melted capsules. When the two surfaces are in place, passing an electromagnetic source nearby will activate the adhesive and affix the surfaces. In one implementation, the radiation source can be attached to a drone which can easily traverse the area in a readily controlled manner. 
     Thus,  FIG. 16  depicts another system  1600  of assembling components of a product  1610  using induction heat, in accordance with at least some embodiments of the present disclosure. The product  1610 , in at least some embodiments, includes a carbon fiber component  1620  and a plastic component  1630  to be attached to the carbon fiber component. The shape, size, and orientation of one or both of the carbon fiber component  1620  and the plastic component  1630  may vary from one embodiment to another. Screws  1640  are placed into aligned holes  1650  in both the carbon fiber component  1620  and the plastic component  1630 . Alternatively, other types of fasteners, rods, etc. other than the screws  1640  may be used. Further, the location, and orientation of the screws  1640  and the corresponding holes  1650  may vary from one embodiment to another depending upon the type of assembling that is desired. Additionally, although two of the screws  1640  are illustrated in  FIG. 16 , it should be understood that additional or fewer screws may be used in alternative embodiments. 
     Notwithstanding the fact that in the present embodiment, the carbon fiber component  1620  is shown as being assembled to the plastic component  1630 , this is merely exemplary. Rather, in other embodiments, any type of components (of any type of non-ferrous material) that are to be assembled together using screws or other type of fasteners capable of being heated may benefit from the embodiments described herein. 
     Specifically, to assemble the carbon fiber component  1620  and the plastic component  1630  using the screws  1640 , an electromagnetic radiation source  1660  is used. In at least some embodiments, the electromagnetic radiation source  1660  is positioned under the holes  1650  causing the screws  1640  to heat up. As the screws  1640  heat up from the electromagnetic radiation source  1660 , the screws expand and melt a portion of the carbon fiber component  1620  and a portion of the plastic component  1630  surrounding the screws. The melting of the carbon fiber component  1620  and the plastic component  1630  causes the plastic component to be attached to both the screws  1640  and the carbon fiber component. The carbon fiber component  1620  is, likewise, attached to the screws  1640  and the plastic component  1630 , thereby assembling the carbon fiber component and the plastic component together. 
     While the electromagnetic radiation source  1660  has been shown as being positioned under the carbon fiber component  1620  and specifically under the holes  1650 , the positioning of the electromagnetic radiation source may vary in other embodiments. For example, the electromagnetic radiation source  1660  may be positioned over, at the sides of, or at an angle relative to the holes  1650 . Additionally, the electromagnetic radiation source  1660  may be mobile or stationary (relative to the product  1610 ) depending on the embodiment and specifically, the heat profile that is desired and the location/orientation of the screws  1640 . The product  1610  may also be mobile or stationary relative to the electromagnetic radiation source  1660 . In at least some other embodiments, one or more additional induction heating elements (i.e., in addition to the screws  1640 ) may be used to assist in melting the materials (e.g., the carbon fiber component  1620  and the plastic component  1630 ) together. Further, although not shown, one or both of the product  1610  and the electromagnetic radiation source  1660  may be positioned on a conveyor belt. 
     In addition to connecting or assembling components together, the embodiments described herein may also be used for food packaging. Specifically, the use of food packaging as an integral part of the heating/cooking process becomes possible using the embodiments described herein. Referring specifically to  FIGS. 17A and 17B , a food packaging system  1700  is shown, in accordance with at least some embodiments of the present disclosure. While the food packaging system  1700  is shown as a rectangular box in  FIG. 17 , it is to be understood that different shapes, sizes, and configurations of food packaging are also envisioned. In at least some embodiments, the food packaging system  1700  includes built in slots  1710  ( FIG. 17A ) into which induction heating elements  1720  ( FIG. 17B ) are inserted. Specifically, the food packaging system  1700  has the slots  1710  into which the induction heating elements  1720  may be placed by a purchaser/user of the food packaging system  1700  to heat/cook the food therein. It is to be understood that although only two of the slots  1710  are shown in  FIG. 17A , additional or fewer slots may be used in other embodiments, with each of the slots being designed to receive one or more of the induction heating elements  1720 . The slots  1710  may also vary in size and/or shape. 
     The slots  1710  may be configured to receive a standard sized induction heating element (e.g., the induction heating elements  1720 ) or other piece of ferrous metal such that the food may be heated/cooked right in the package in which the food is purchased. As a result, the food may be conveniently cooked by placing the food packaging system  1700  on an induction cooktop (or other electromagnetic radiation source). In at least some embodiments, the food packaging system  1700  is made from a non-ferrous heat resistant material. In one embodiment, the food packaging system  1700  (as purchased) may include the induction heating elements  1720  in or around the packaging system such that the user does not have to place the induction heating elements into the food packaging system. In another embodiment, through placement of the induction heating elements  1720 , only a portion of the food in the food packaging system  1700  is heated at a time, and the remaining food may be left in the food packaging system and placed in the refrigerator until the remaining food is to be reheated. This may all be done without removing the food from the food packaging system or needing to transfer to a pot to cook the food in. In another embodiment, the food packaging system  1700  itself may acts as a cooking vessel. For example, the food packaging system  1700  may include a dry food product which is to be cooked in water. Water may be added to the food packaging system  1700  and the food packaging system may be placed on an induction stove (or other electromagnetic radiation source) such that electromagnetic radiation heats one or more induction heating elements in or around the food packaging. 
     In at least some embodiments, the induction heating elements  1720  (and other induction heating elements described in this disclosure) may include a non-ferrous portion that does not get directly heated as a result of receiving electromagnetic radiation. The non-ferrous portion may be used to handle/remove an induction heating element that is hot. The non-ferrous portion may be made of ceramic or another heat resistant material, and may be in the form of a lip, an edge, a grip, a handle, etc.  FIGS. 18A-18C  depict exemplary induction heating elements having non-ferrous portions, in accordance with at least some embodiments of the present disclosure. 
     Specifically,  FIG. 18A  depicts an induction heating element  1800  having a ferrous portion  1810  and a non-ferrous lip  1820  that may be used to handle the induction heating element when the ferrous portion  1810  is hot.  FIG. 18B  depicts an induction heating element  1830  having a ferrous portion  1840  and a non-ferrous edge  1850  surrounding at least a portion of the ferrous portion such that the non-ferrous edge may be used to handle the induction heating element when the ferrous portion is hot.  FIG. 18C  depicts an induction heating element  1860  having a ferrous portion  1870  and non-ferrous grips  1880  (only one of which is visible in  FIG. 18C ) that may be used to handle the induction heating element when the ferrous portion is hot. While only a single one of the non-ferrous grips  1880  is visible in  FIG. 18C , it is envisioned that the induction heating element  1860  includes at least a second one of the grips opposite the illustrated grip. In alternative embodiments, additional number of the non-ferrous grips  1880  may be used. 
     It is to be understood that while the induction heating elements  1800 ,  1830 , and  1860  have been shown and described as having a certain configuration, this is merely exemplary. In other embodiments, the proportion of the ferrous portion relative to the non-ferrous portion may vary in the induction heating elements. Likewise, the shape and size of the induction heating elements may vary from one embodiment to another depending upon what is desired. Additionally, the type of the non-ferrous portion (e.g., the non-inductive lip  1820 , the non-inductive edge  1850 , and the non-inductive grips  1880 ) may vary from one embodiment to another. For example, the induction heating element  1800  of  FIG. 18A  may be configured with the non-inductive edge  1850  in addition to or instead of the non-inductive lip  1820 . Thus, more than one type of non-ferrous portions may be used in any embodiment of the induction heating element. Furthermore, only three types of the non-ferrous portions have been described herein. Rather, in other embodiments, various other configurations of the non-ferrous portions, such as handles, rims, notches, etc., are contemplated. 
     Turning now to  FIGS. 19A-19D , circuit switches  1900  are shown, in accordance with at least some embodiments of the present disclosure. As will be described further below, the circuit switches  1900  are triggered by an electromagnetic radiation source. Specifically, in at least some embodiments, a bimetallic strip is used to implement controls in conjunction with the electromagnetic radiation source. 
     To use the bimetallic strip to control the circuit switches  1900 , in at least some embodiments, at least a portion of the bimetallic strip is configured to bend in a predetermined direction in response to being heating by the electromagnetic radiation source. Bending in the predetermined direction may result in the bimetallic strip going from a linear state to a curved state, or from a curved state to a linear state, depending on the implementation. Such bending of the bimetallic strip may open/close an electrical circuit in response to application/removal of the electromagnetic radiation source heating the bimetallic strip (which heats up in the presence of this radiation) or removing the source of heat. This will turn the circuit switches  1900  on or off as desired. 
     Furthermore, the electromagnetic radiation source may be remotely controlled such that the bending of the bimetallic switch may be remotely controlled and the switch (e.g., the circuit switches  1900 ) may be turned on/off from a remote location. This adds flexibility to the ability to control the flow of current in a circuit. The on/off feature enables the control of all fluid motion. The use of targeted electromagnetic radiation (as opposed to relying solely on ambient temperature to enact a change in the bimetallic strip) greatly expands the utility of such bimetallic strips and enables the use of smaller versions, while demonstrating the bending effect as a result of temperature changes. 
     Thus,  FIGS. 19A and 19B  depict a first circuit  1910  having a bimetallic strip  1920  that acts a switch for the first circuit. In the embodiment of  FIG. 19A , the bimetallic strip  1920  is cool (or otherwise not heated by an electromagnetic radiation source  1930  (see  FIG. 19B )), resulting in the bimetallic strip having a linear (e.g., straight or non-curved) shape that results in the first circuit  1910  being closed or on (i.e., current may flow through the first circuit  1910  because the bimetallic strip  1920  completes the first circuit). In  FIG. 19B , the electromagnetic radiation source  1930  is used to apply electromagnetic radiation to the bimetallic strip  1920 . As a result, the bimetallic strip  1920  becomes heated and temporarily assumes a non-linear (e.g., curved) shape, which results in an open circuit such that current cannot flow through the first circuit  1910  (i.e., the first circuit is off). The electromagnetic radiation source  1930  may be remotely or locally controlled, depending on the implementation. Thus, by virtue of using induction heat to control the bending of the bimetallic strip  1920 , the circuit switch formed by the first circuit  1910  may be controlled. 
       FIGS. 19C and 19D  depict a second circuit  1940  having a bimetallic strip  1950  that acts a switch for the second circuit. In the embodiment of  FIG. 19C , the bimetallic strip  1950  is cool (or otherwise not heated by an electromagnetic radiation source  1960 ), resulting in the bimetallic strip having a linear shape that results in the second circuit  1940  being off (i.e., current does not flow through the second circuit because the position of the bimetallic strip results in an open circuit). On the other hand, in  FIG. 19D , the electromagnetic radiation source  1960  is used to apply electromagnetic radiation to the bimetallic strip  1950 . As a result, the bimetallic strip  1950  gets heated up and assumes a non-linear shape which results in a closed circuit such that current flows through the second circuit  1940  (i.e., the circuit is on). The electromagnetic radiation source  1960  may be remotely or locally controlled, depending on the implementation, to remotely or locally control the operation of the switch formed by the second circuit  1940 . 
     Thus, the bimetallic strips  1920  and  1950  may be used to activate or deactivate a switch. Although not discussed specifically, such a switch circuit may, in addition to the bimetallic strip, also include resistors, capacitors, battery sources, etc. Other electrical components, although not shown or discussed, may be provided in the circuit switches  1900  in other embodiments. 
     The targeted heating of a ferrous metal via induction heating may also be used to form a detector device. For example, in one embodiment, a package may claim to only include food or edible material. A detection system may be used to check the package for ferrous material that is being smuggled in the package or that otherwise inadvertently made its way into the package. If the package is placed near an electromagnetic radiation source, the package increases in temperature, thereby providing an indication that the package includes ferrous material. The increase in temperature may be detected directly by placing a temperature sensor on or near the package, or indirectly based on emitted infrared radiation from the package. Such a method may eliminate the use of an X-ray detector (and its associated harmful rays) in at least some detection scenarios. 
     To that end,  FIG. 20  depicts a detection system  2000 , in accordance with at least some embodiments of the present disclosure. The detection system  2000  includes an electromagnetic radiation source  2010  that is configured to emit radiation toward a package  2020 . The package  2020  may be moving on a conveyor belt or may be stationary, depending on the implementation. Upon application of the electromagnetic radiation from the electromagnetic radiation source  2010 , a piece of ferrous material  2030  inside the package  2020  generates heat, causing the package to increase in temperature and generate infrared radiation. A sensor, not shown, may be used to detect the increase in temperature and/or the infrared radiation. Upon detection of the heat/infrared radiation and, assuming that the package  2020  is not supposed to contain any ferrous material, the detection system  2000  may generate a warning or alert to inform a user (e.g., inspector) that the package contains a piece of ferrous material (e.g., the ferrous material  2030 ) and may need further inspection. 
     Targeted induction heating may also be used to heat certain laboratory equipment used in experiments. Chemists, students, laboratory technicians, etc. often carry out experiments that require one or more contents of a test tube, flask, or other laboratory equipment to be heated. The contents of such equipment are traditionally heated by the chemist, student, lab technician, etc. holding the equipment over a Bunsen burner or other open flame. Use of such an open flame is dangerous, and may result in burns and/or unintentional fires. To improve safety, an induction heating element may be attached to or incorporated into the laboratory equipment. 
     For example, in one embodiment, an induction heating element may be implanted into the glass of the test tube, flask, or other laboratory equipment during production. Upon application of electromagnetic radiation, the implanted induction heating element heats the contents of the test tube, flask, or the other laboratory equipment safely without the need of a dangerous open flame. 
     Thus,  FIG. 21  depicts a test tube  2100  with an induction heating element  2110 , in accordance with at least some embodiments of the present disclosure. An electromagnetic radiation source  2120  generates electromagnetic radiation, which heats the induction heating element  2110  of the test tube  2100 , thereby heating the contents of the test tube. The induction heating element  2110  may be attached to a surface of the test tube  2100  (i.e., post production), or incorporated into the test tube during production. While the embodiment of  FIG. 21  illustrates the induction heating element  2110  on only an end portion of the test tube  2100 , it is to be understood that the induction heating element  2110  may cover more (including the entire test tube) or less of the test tube, depending on the desired amount of heat desired. In one embodiment, a user may attach a desired number of induction heating elements to the test tube  2100  depending on a desired temperature to which the contents are to be heated. 
     Also, while  FIG. 21  only shows the application of a test tube, other laboratory equipment that are to be heated are contemplated and considered within the scope of the present disclosure. For example, flasks, beakers, crucibles, cylinders, evaporating dishes, bottles, jars, etc. may benefit from the embodiments described herein. 
     Targeted induction heating may be used in a variety of other embodiments as well. Some of those embodiments are described below. For example, a narrow, targeted beam of electromagnetic radiation may also be used in colder climates to warm a car battery or other portion of a vehicle to facilitate easier starting of the vehicle. Specifically, a targeted electromagnetic radiation source may be placed proximate to a ferrous material positioned adjacent to the car battery. By emitting electromagnetic radiation, the electromagnetic radiation source may cause the ferrous material to heat up, thereby warming the battery and allowing the vehicle to start. In at least some embodiments, the electromagnetic radiation source may be powered from a wall outlet or other power source remote from the vehicle. Alternatively, the electromagnetic radiation source may be powered by the car battery itself or by a secondary battery associated with the electromagnetic radiation source. 
     Another application of targeted induction heating may involve verification of the authenticity of an item, such as of an enclosed/sealed package/item (e.g., a pill bottle), to help combat fraudulent reproduction and copying. For example, to authenticate an enclosed item, a detection unit may be incorporated into the enclosed item. In at least some embodiments, the detection unit may be incorporated into a small, sealed chamber of the enclosed item. The detection unit may itself be a sealed unit having a dye, paint, stain, ink, or other marking material therein. The marking material may vary in color and consistency. The walls of the detection unit may be made of plastic and ferrous elements may be incorporated inside the plastic walls along with the marking material. Alternatively, at least a portion of the detection unit walls may be made from ferrous materials. 
     When the enclosed item is exposed to electromagnetic radiation from an electromagnetic radiation source, the ferrous materials in the detection unit heats up and melts the plastic portion(s) of the walls of the detection unit, releasing the marking material. The small, sealed chamber that forms part of the enclosed item and that contains the detection unit may be placed in an innocuous place within the enclosed item. The small, sealed chamber may also include a small viewing window such that an end user or the authorities are able to view the marking material when it is released in response to electromagnetic radiation, thereby verifying the authenticity of the enclosed item without having to break/tamper/specifically inspect the enclosed item. The viewing window may form at least a portion of an exterior wall of the enclosed item, in at least some embodiments. 
     Thus, an end user or authorities may activate the detection unit with electromagnetic radiation to verify the authenticity of the enclosed item without having to open the enclosed item. Specifically, a replica or knock off of the enclosed item is likely not to include the small, sealed chamber or the detection unit which includes the ferrous material and marking material that is to be released upon exposure to electromagnetic radiation. The location of the detection unit and/or color of the marking material will be provided from the manufacturer to the end user, such that the user knows where to look for the marking material and what color the marking material should be. If the marking material appears in the correct location and is the correct color, the user may be confident that the enclosed item is authentic, before opening the enclosed item. 
     Such an authenticating system may be used to combat the proliferation of counterfeit drugs. Any duplicate packaging may appear the same on the outside, but is likely not to have the embedded detection unit which releases the marking material. In one embodiment, the detection unit may be configured such that the opening of the enclosed item triggers the release of the marking material. For example, the detection unit holding the marking material may include a detachable lid that is connected (by a wire, etc.) to a lid of the enclosed item such that the lid of the detection unit is opened when the lid of the enclosed item is opened, thereby releasing the marking material. Thus, if the end user receives the enclosed item with the marking material already visible, the end user may be alerted that the enclosed item may have been tampered with. 
     These embodiments provide advantages over the use of conventional authenticity messages, which are visible only under ultraviolet (UV) light. Use of light activated messages to show authenticity is subject to unauthorized inspection by third parties without alerting the end user that the inspection was performed. In the disclosed embodiments, inspection via electromagnetic radiation by a third party is apparent to the end user because the marking material has become visible by an unauthorized inspection prior to the enclosed item being received by the end user. The embedded detection unit may also be used for identification, selection, and detection purposes, in addition to protecting against tampering and counterfeiting as discussed above. The embedded detection unit may be of a variety of shapes and sizes, and multiple embedded detection units may be used simultaneously in a single enclosed item. In addition, the walls of the detection unit may be formed from meltable materials other than plastic. 
     The embodiments described herein have a multitude of applications which improve both safety and convenience. The ability to heat objects without a flame decreases the likelihood of a fire and burns. The ability to specifically and effortlessly place heating elements in any location/orientation relative to food improves user convenience and cooking options. With recent advances in battery and other energy source technology, an induction cooktop or heating system may be made portable. Additionally, the embodiments described herein no longer require a user to heat a metal pot to heat contents of the pot. Rather, electromagnetic energy may be directed to one or more induction heating elements, which in turn act as the heat source for heating the contents of the pot. 
     Small, localized induction heating systems may be placed in hotel rooms, in workplace lunch rooms, in college dormitories, in parks, at rest areas, on hiking trails, in campgrounds, etc. Induction heating systems may also be plug in units and/or include batteries or other portable power sources, depending on the embodiment. The induction heating systems may be free of charge or pay to use units. Travelers, hikers, etc. may use the portable induction heating systems without the need to have a pot or other cooking container. Rather, the user may have (or be provided with) one or more induction heating elements that may be used to heat food in any number of containers. Turning on the electromagnetic radiation source of the induction heating system allows the food to cook without the risk of contamination from food of other users, as may happen, for example, when using a microwave oven. Microwave ovens also require cleaning and removal of food residue from previous users, and such maintenance is avoided with the user of the induction heating systems described herein. There is also low or no risk of fire when using a small, localized induction heating system. 
     Hospitals and other healthcare facilities may also use small, localized induction heating systems to warm up foods in a targeted and/or differential manner for the convenience of patients and staff. Caterers who are out on the road will similarly find convenience in the use of small, localized induction heating systems. Large quantities of food may be brought to a catered event, and a number of small induction heating systems may be used to carry out all of the heating operations needed to prepare and maintain a heated meal, with much less effort and a great deal more safety than in traditional preparation methods. 
     An induction heating system may also be added to a vehicle, such as a car, semi, truck, boat, all-terrain vehicle, etc. The engine and/or battery of the vehicle may act as a power source for the electromagnetic radiation source and the induction heating system may be used for cooking during outdoors events such as a tailgate party, picnic, etc. Additionally, the induction heating source may be used to generate heat in the vehicle for use in colder climates. This allows cooking and/or heating to be performed without the use of flames and dangerous fuels such as propane, lighter fluid, gasoline, etc. 
     The systems described herein may also be used in cold environments to heat articles of clothing. For example, an article of clothing may include ferric threads in at least a portion of the fabric. A layer of ferrous material can also be placed on one or more layers of non-ferrous material to form the cloth, or the cloth can be impregnated with ferrous particles (including ferrous nanoparticles). The ferrous particles can also be placed in paint, which can be applied to the cloth. Clothing can be formed from the cloth using standard procedures. Upon receipt of electromagnetic radiation, the ferric threads may generate heat, which is transferred to the wearer of the article of clothing. In alternative embodiments, induction heating elements other than ferric thread, such as ferric plates, ferric buttons, ferric fashion accessories, etc. may be incorporated on or into clothing to provide heat to the user. This allows the individual to not rely as much on dangerous space heaters, bonfires, etc. to stay warm. The electromagnetic radiation used to heat the induction clothing may come from a stationary source. Alternatively, as one example, vehicles may include electromagnetic sources that may activate the induction clothing from a distance as the vehicle passes by a wearer of the induction clothing. For example, construction workers, traffic officers, etc. may be able to heat themselves by utilizing electromagnetic radiation from passing vehicles. Similarly, such electromagnetic sources may be placed along sidewalks, trails, etc. such that passersby may be heated as they pass. 
     The systems described herein may also be used for cooking and/or heating during camping. For example, an induction heating source in conjunction with induction heating elements in a tent or other enclosing sleeping space is much safer that the use of gases such as propane, which may result in oxygen depletion and death. Thus, this may be applied to field use for both military personnel and civilians. 
     The systems described herein also provide for safer remote preparation of food. For example, a user may set a timer to have an induction hot plate begin heating inductive elements (which in turn heat food) while the user is on his/her way home from work. This process is safer than using electric cooktop, crock pot, or other electrical apparatus that may cause a fire when the user is not present. In one embodiment, a heat or temperature sensor may be incorporated into or placed near one or more of the induction heating elements. If the temperature sensor determines that the temperature exceeds a safe operating threshold temperature, the sensor may send a signal to cause the electromagnetic radiation source to shut down, thereby cooling the temperature of the heating element and reducing the risk of fire. 
     The systems described herein may also be used with robotic features for remote cooking or other applications using the robotic features. For example, a robotic arm may be incorporated into or near a refrigerator. The robotic arm may be configured to automatically take a container of food from the refrigerator (at a predetermined time) and place the food container near an induction heating system such that the food is heated. The robotic arm may also be configured to place induction heating elements into the food container. Alternatively, the food container may come with the induction heating elements already therein, or the user may place the induction heating elements in the food container in advance. As such, the food may remain cold for most of the day, but may be heated while the user is on his/her way home such the user comes home to a heated meal. 
     In one embodiment, the induction cooking system may be incorporated into an insulated portion of the refrigerator, and the robotic arm may move the food from a cold storage portion of the refrigerator into the insulated portion of the refrigerator at a predetermined time. The robotic arm (or other associated computing system) may then activate an electromagnetic radiation source such that the food in the insulated portion of the refrigerator is heated, allowing the user to come home to a hot meal that is already prepared. Again, the robotic arm may position induction heating elements in or around the food container and/or the insulated portion of the refrigerator. Alternatively, the induction heating elements may be placed by the user. 
     In another embodiment, a spoon or other utensil fashioned out of ferrous metal can serve as the heating element. A non-ferrous food container of appropriate size is placed adjacent to or on top of the electromagnetic source. When the spoon is placed in the container and the radiation source turned on, the metal of the spoon heats up, thereby causing the food in the container to heat up. In one configuration, the handle of the spoon is made of non-ferrous material such as wood, plastic, or ceramic such that the handle can be held without being burned. This concept is readily extended to other utensils of various sizes. In alternative embodiments, the utensil can be made entirely of metal which will heat up in the presence of the electromagnetic radiation. In another alternative embodiment, the utensil can be made from sections of ferrous metal in a substrate of non-ferrous material, or any other combination. 
     In another embodiment, a ferrous heating element can be placed in the wall of a non-ferrous food container such that at least a portion of the ferrous heating element is external to the food container and at least a portion of the ferrous heating element is internal to the food container. Placing the radiation source outside of the container will result in the exterior portion of the heating element quickly heating up, thereby heating the interior portion of the heating element via conduction such that the contents of the food container are heated. Any number of such heating elements can be used, in different areas of the container, and the heating elements can be of different sizes. The heating elements can be permanently mounted to the food container in one implementation. Alternatively, the heating elements can be adjustable such that the amount of the heating element which is internal/external to the food container can be altered by sliding the heating element further into (or out of) the food container. The heating elements may also be entirely removable from the food container. In such an embodiment, a plug component can be used to fill the hole which was previously occupied by a removed heating element. 
     In current practice, following the path of physical/chemical processes in a living animal or plant (such as blood or other fluid flow) is difficult and often involves the use of radioactive tracers, fluorescent molecules, etc. In another embodiment, dietary or other iron may be injected into the blood stream or other fluid path of a living entity and, upon being subject to electromagnetic radiation, the injected iron generates a safe level of heat. One or more heat detectors may be placed on or near the subject to identify areas of the subject that are being heated as a result of the injected iron. The one or more heat detectors are associated with a processing device that receives indications of detected heat and tracks the progression or location of the injected iron in the subject based on the detected heat. As a result, ongoing processes in living things may be followed without the need for radioactive tracking systems that are in current use. 
     The induction systems described herein may also be used for internal detection. For example, an induction technique may be used to detect the presence of (ferrous) shrapnel in an injured soldier. Specifically, electromagnetic radiation may be targeted to an injury site and heat detectors may be placed on/near the patient to determine whether there is an increase in heat due to the shrapnel within the patient. Additionally, it has been established that at least some bacterial infections involve the cooperation of bacteria to grow and form a large bacterial infection site, as opposed to remaining a collection of individual bacteria particles spread throughout an organism. Iron is an important component of bacterial growth. As such, an induction system may be used to pinpoint regions of bacterial infection. Specifically, electromagnetic radiation may be passed through an area of an organism such that iron in a bacterial infection emanates heat. Heat detectors may then be used to identify areas emanating heat to pinpoint the location of the infection. 
     The induction systems described herein may also be used to study animal learning. Current tests that explore animal learning capabilities often involve the imposition of hunger on the animal with the utilization of food as a reward for performing some task such as completing a maze. Induction heating elements may similarly be used to study animal learning. For example, an animal may be placed into a cage in a cold environment, where a portion of the cage is made of ferrous material that generates heat when subjected to an electromagnetic radiation. The cage may include the ferrous material in the form of spaced out strips of metal that may be moved around by the animal. As an example, the spaced out strips of metal may be in a portion of a roof of the cage and observers may determine how long it takes the animal to realize that it receives heat if it stands proximate to the spaced out strips. Observers may also determine whether the animal has the intelligence to manipulate the strips (i.e., move them all together into a single unit) to increase the heat in a given area of the cage, etc. Observers may also determine whether one animal is capable of teaching another animal how to manipulate the metal strips for a warming effect. 
     The embodiments described herein make it possible to create heat in a desired and targeted location without the use of convection, conduction, or heat radiation. Rather, electromagnetic radiation, which passes through tissue, food, plant matter, plastics, and non-ferrous metal, may be used to heat ferrous metal placed in the location of choice. The ferrous metal may have any shape, dimension, or state, including solid or liquid. The heating of the ferrous metal may be completely controlled for purposes of schedule, duration, repetition, and number of events for a given time period. Further, the level of heating may be modulated by the nature of the electromagnetic radiation sent by the electromagnetic radiation source. This enables the control and function at a distance not possible in the past. 
     The techniques described herein may also be used to conduct targeted pinpoint heating in both living entities and inanimate objects. For example, placing a small amount of metal into an entity/object and then passing electromagnetic radiation through the metal may allow for selection, control, and in some instances, self-repair. This differential reception of electromagnetic radiation, which appears as heat may also be used to destroy unwanted tissue, or heal and revive other tissue as the case may be. For example, consider a device implanted in living tissue which on occasion requires a current flow, but not so often as to justify an implanted battery or complicated receiver. Such a device may be powered using induction heat by placing a thermocouple wire in a desired location, where one end of the thermocouple wire is surrounded by additional ferrous material. Passing electromagnetic radiation through the thermocouple wire induces a temperature gradient, which in turn generates the desired current to provide power to the device, to perform nerve stimulation/treatment, accelerate healing, etc. 
     In another embodiment and as discussed above, a bimetallic strip may be placed in a location which is not readily accessible and used to complete a circuit or interrupt a circuit, as discussed herein. Sending electromagnetic radiation at a desired time heats the bimetallic strip, causing it to bend and thereby control the circuit. This principle may also be extended to opening and closing a valve by heating it using induction heat by surrounding it with ferrous material and causing a desired expansion. Expansion of this kind may be used to control an enclosed fluid, which in turn may be used to direct the flow of other liquids. The same principle may be used to melt a fuse in a circuit in order to begin a function or operation, for example, to interrupt an ongoing circuit at a predetermined time. Heat applied at a distance may also be used to induce adhesion of heat reactive adhesive in an industrial setting, promote healing in a living body, and stimulate a repair that requires heat. 
     The danger of the inadvertent triggering of the induction devices described herein due to stray radiation is low. For example, many individuals wear and/or carry ferrous metal without having the metal heat up as a result of stray radiation in the environment. To implement the induction devices described herein, strong, precisely directed electromagnetic radiation is used. In rare circumstances, it may be desirable to implement protective measures on the induction devices to prevent the effect of stray radiation, as is done relative to pacemakers, for example. 
     There are many applications for the induction methods described herein, including use of a ferrous paper-like wrapper attached to an electromagnetic source to heat food in any location, including at a user&#39;s desk, in a kitchen or lunchroom, in a restaurant, etc. In the farming industry, the methods described herein may be used to prevent frost from damaging plants by placing ferrous material in or around plants and causing the ferrous material to selectively heat the plants by applying the appropriate amount of electromagnetic radiation. Induction heating may also be used in blankets, clothes, etc. to heat humans and animals. 
     As discussed throughout, the ability to transmit heat remotely without the need for conduction, convection, or heat radiation provides advantages relative to safety, and does not require the installation of wires to conduct electricity. Additionally, the ability to heat an object or area at a distance without any effect on the intervening substance has a large number of applications. For example, systems which require a cycle or a given order of operations may use remote and targeted induction heating. A lighted sign, for example, may have portions that light up at certain times and/or in a certain order. Targeted electromagnetic radiation may be used to activate ferrous switches in the sign, thereby causing the appropriate portion to light up at the appropriate time. 
     Similarly, an otherwise non-metallic motor may utilize ferrous components to generate heat and/or a spark at appropriate times during the motor&#39;s cycle. The control of such targeted induction systems may be computerized such that a user may precisely program the timing and location of electromagnetic radiation to achieve the desired result. As an example, a teacher or salesperson may use induction heat to selectively light a whiteboard, sign, display, etc. to help make a point or highlight a given area. 
     Additionally, experiments and processes that need intermittent heat, but that require isolation from the ambient environment may also utilize induction to provide the heat. For example, contents of an experiment requiring isolation may be housed in a plurality of sealed, non-ferrous containers. A ferrous element may be inserted into or attached to one or more of the non-ferrous containers that requires intermittent heat to complete the experiment. The ferrous element(s) may be selectively heated at appropriate times to deliver heat without unsealing or otherwise disturbing the contents of the experiment. Crystal growth and cell growth are examples of experiments/procedures that may utilize heat at a distance to facilitate the growth. Heat may also be applied to a substance (such as a PVC pipe) such that the substance is more inclined to emit chemicals. For example, such heating may be used in conjunction with spectroscopy to improve the emissions of a substance so that the emissions are more readily detectable. 
     Induction heat may also be used to assist with surgical procedures that utilize heat. For example, heat operations featuring ablations may utilize heat that is physically transferred from outside to within the target area. In such a procedure, a small ferrous target may be placed with great precision prior to surgery and may be monitored during the surgery. In the context of atrial fibrillation, the inserted ferrous target may be monitored over many heart cycles, and may be used to transfer heat to a target area to perform an ablation without distress to the patient. The ferrous target may easily be removed once the heat need for the operation is delivered. 
     Remote and targeted heating may also be used to protect objects and systems that are not readily accessible. For example, ferrous elements may be selectively placed near or around plastic pipes that carry water, and may be used to prevent the pipes from freezing during cold weather conditions. Such pipes may be underground or within walls, and may be otherwise very difficult to access directly. In one embodiment, a computerized system may control the heating of such pipes, and may be configured to automatically activate induction heating of the pipes when the temperature drops below a certain threshold, such as the freezing point. 
     As discussed herein, clothing may also take advantage of induction heating through the incorporation of ferrous threads that are interwoven into non-ferrous materials. When proximate to an electromagnetic radiation source, the clothing may be heated, providing warmth to the wearer. Such electromagnetic radiation sources may be used in public areas such as bus stops and other areas where individuals are exposed to the elements. Electromagnetic radiation sources for use in heating clothing may also be placed indoors and/or on public transportation such as buses, trains, planes, etc. 
     Induction heating may also be used to protect trees and plants from unusually cold temperatures. For example, ferrous elements may be placed proximate to the roots of a tree or other plant, and may thereby be used to maintain the roots at a given temperature so that the plant does not die. Such a process may be very beneficial in a tree nursery in which a cold snap likely causes significant losses. In one embodiment, the pots of potted plants, such as flower pots, may include or be made from ferrous material such that the pot may be heated, thereby heating the soil within the pot and the roots of any plants in the pot. For example, a flower pot can be constructed with ferrous metal inserted into the walls of the container or surrounding the walls of the container. A radiation source can be programmed to automatically turn on when a low temperature threshold is reached such that the plants can be safely warmed with no safety concerns and no wires which may become excessively hot. Specifically, radiation travels to the element in or surrounding the flower pot, and heats the pot, which in turn warms the plants. This concept can be extended to large containers for plants, to greenhouses, and to tree roots. Animal cages can similarly be heated. Induction heating may also be used to warm a bee hive without disturbing the bees. 
     Remote induction heating may also be used by rescue workers to help warm individuals that are trapped or otherwise inaccessible. For example, workers trapped in a mine may have or be provided with ferrous material to receive heat. Targeted electromagnetic radiation may then be used to heat the ferrous material. Similarly, individuals trapped under snow and ice may receive heat via electromagnetic radiation if they are equipped with ferrous material. 
     The concept of delivering heat into a living body has a number of uses. For example, drug delivery may be facilitated via induction. A drug may be at least partly encased by a small amount of ferrous metal, and may be released by a burst of electromagnetic radiation that is configured to melt the small amount of metal. The drug may be delivered into a tumor, for example. No other sources of thermal energy currently in use has such a little of a disturbing impact on the intervening tissue. Targeted induction heating may also be used to enhance vascular permeability, and may even be used to transcend the blood-brain barrier as medical technology improves. 
     Heat may also be used to change the physical properties of objects such as electrical resistance, length, hardness, etc. The embodiments described herein enable a new level of control in devices made of plastics and other non-ferrous materials. Such devices may include a ferrous element at a key location to serve as an active control. For example, consider two wooden surfaces which are intended to be joined or kept together in certain circumstances and kept apart in other circumstances. One of the wooden surfaces may include a ferrous pin or rod attached thereto, and the other wooden surface may include a plastic receptacle into which the pin or rod fits in a cool (i.e., unheated) condition. Upon heating, the rod or pin increases in diameter such that the rod or pin does not fit into the plastic receptacle. When the heat is removed, the diameter of the rod or pin decreases, thereby allowing it to fit into the plastic receptacle. 
     Thus,  FIG. 22  depicts a device attachment mechanism of a device  2200  having a male to female connection that is controlled via temperature, in accordance with at least some embodiments of the present disclosure. In  FIG. 22 , the device  2200  includes an upper wood surface  2210  and a lower wood surface  2220 . A ferrous rod  2230  placed horizontally across the opening is configured to fit into a plastic receptacle  2240  when the ferrous rod is cool, and the ferrous rod is configured to not fit into the plastic receptacle when the ferrous rod is heated. 
     In some instances, it is desirable or necessary for two chemicals to be combined at a specific time and/or location which are not accessible or convenient. In an embodiment, the chemicals are placed in adjacent containers or in adjacent parts of the same container, and are separated by an interface which can be melted by the addition of heat. At this interface, a ferrous element of appropriate size is placed and an electromagnetic radiation source is placed nearby. At the appropriate time, the radiation source is turned on, causing the ferrous element to heat up and melt the interface such that the chemicals are combined. 
     All applications needing heat can be designed to receive such heat using the combination of a radiation source and a ferrous element or material. For example, a thermocouple can be heated in this way, with induction at one end to create a current or control a switch in a circuit. Similarly, a stirling engine can use such induction heating as a source of heat in certain applications where other sources of heat are neither convenient nor safe. The ability to target and control the location and intensity of heating also makes the embodiments described herein useful in situations where it is desirable to dry liquids. This would include wet paint on small (or even large) areas, chemical reactions, biological specimens, liquid surface protectant that has been applied to a surface, and/or any other areas where a warm environment at a specific location will induce a more rapid drying. 
     In some embodiments, control of the heating elements described herein may be implemented at least in part as computer-readable instructions stored on a computer-readable medium, such as a computer memory or storage device. Upon execution of the computer-readable instructions by a processor, the computer-readable instructions may cause the computing device to perform the operations by directing the radiation source to begin in a desired fashion. 
     As discussed above, traditional induction cookware is typically made entirely of a ferromagnetic material that heats up as a result of electromagnetic radiation (e.g., fluctuating magnetic field) that is directed toward the cookware. The electromagnetic radiation is emitted from a radiation source, the magnitude of which is controlled by a user. As a result of the induction cookware being entirely made of ferromagnetic material, all of the food placed into the cookware is uniformly heated. However, in some situations, it is desirable to have food heated at different rates in the same cooking vessel. For example, it may be desirable to not heat a bottom of the cooking vessel to avoid burning the food. This is especially true for delicate food preparation techniques, such as the making of caramel and candies. Additionally, it may be desirable to have selective heat placement in the cookware when defrosting frozen foods such that the defrosting process is complete prior to commencement of the actual cooking of the food. Also, with traditional cookware (both induction and convection), the entire cookware is heated, including the handle(s) and portions of the cookware that are not in contact with food. This is inefficient and results in wasted heat energy that is dispersed into the environment. Described herein are cooking vessels and components that can be used to heat food and other items in a targeted and controlled manner via induction without wasting resources. 
       FIG. 23A  depicts a cooking vessel  2300  in accordance with an illustrative embodiment. As depicted, the cooking vessel  2300  is in the shape of a cube. In alternative embodiments, the cooking vessel  2300  may be cylindrical, rectangular, or have any other shape. In an illustrative embodiment, the cooking vessel  2300  is made entirely or primarily of a non-ferromagnetic material such as wood, copper, aluminum, heat resistant plastic, etc. such that the cooking vessel does not heat up in response to applied radiation from an induction source. Rather, the cooking vessel  2300  is configured to incorporate one or more induction elements, which are used to heat the food or other contents of the vessel. 
     The cooking vessel  2300  includes a handle  2305 , a bottom wall  2310 , and side walls  2315 . As discussed in more detail below, the handle  2305  is mounted below an upper edge  2320  of the cooking vessel  2300  to accommodate placement of an induction element at any location along the upper edge  2320  formed by the side walls  2315 . In one embodiment, the handle  2305  is positioned on the side wall  2315  at least 1 inch below the upper edge  2320 . Alternatively, a different distance may be used such as 0.25 inches, 0.5 inches, 0.75 inches, 1.5 inches, 2 inches, etc. In alternative configurations, the cooking vessel  2300  may include fewer or additional handles, one or more handles of a different shape, and/or one or more handles mounted in different positions on the vessel. In some embodiments, the cooking vessel  2300  may also include a lid or cover that is configured to fit on top of the vessel. 
       FIG. 23B  depicts an induction element  2350  in accordance with an illustrative embodiment. At least a portion of the induction element  2350  is made from a ferromagnetic material that heats up in response to received radiation from an induction source. The induction element  2350  includes a heating member  2355 , an upper edge contact member  2360  mounted to (or integrally formed with) the heating member, and a lip  2365  mounted to (or integrally formed with) the upper edge contact member  2360 . The induction element  2350  mounts to the cooking vessel  2300  such that the heating member  2355  rests on an interior surface of a side wall  2315  of the vessel. Specifically, the upper edge contact member  2360  rests on the upper edge  2320  of the cooking vessel  2300  and the lip  2365  rests upon an outer surface of a sidewall  2315  of the vessel. As noted above, the handle  2305  can be mounted to a sidewall  2315  of the vessel at a distance below the upper edge  2320  such that the induction element  2350  can be positioned at any location along the perimeter of the upper edge  2320 . The distance is greater than or equal to a length with which the lip  2365  extends downward from the upper edge contact member  2360 . 
     In one embodiment, the heating member  2355  can have an adjustable length such that a bottom of the heating member  2355  is able to rest on the bottom wall  2310  of the cooking vessel  2300  or be raised up so that it does not rest on the bottom wall  2310  of the vessel. For example, in one embodiment, the heating member  2355  can include an upper portion and a lower portion, and the lower portion can be slidably mounted to the upper portion. In such an embodiment, sliding the lower portion relative to the upper portion adjusts an overall length of the heating member  2355 . The lower portion can be maintained at a given position through a friction fit. Alternatively, the lower portion and the upper portion can include holes that, when aligned, are configured to receive a fastener or pin that holds the lower portion at a desired depth within the cooking vessel  2300 . 
     In an illustrative embodiment, the induction cooking vessel  2300  can accommodate a plurality of induction elements, depending on the user&#39;s preferences. The use of additional induction elements enables targeted heating within the cooking vessel  2300  at a plurality of different locations. In another embodiment, the heating member  2355  of the induction element  2350  can be made from a ferromagnetic material, and the upper edge contact member  2360  and/or lip  2365  can be made from a non-ferromagnetic material such that the upper edge contact member  2360  and/or the lip  2365  are cooler to the touch. This allows the user to more easily reposition the induction element  2350  without getting burned. The induction element  2350  can also include a handle (not shown) made of non-ferromagnetic material to facilitate movement of the induction element  2350 . In another embodiment, the induction element  2350  may be available in a plurality of different sizes such that the user is able to select an appropriate size for the desired heating application (i.e., a larger induction element can be used for generating more heat, and a smaller induction element can be used for generating less heat). 
     In an alternative embodiment, the upper edge of the induction cooking vessel can include one or more slots configured to receive the upper edge contact member  2360  of the induction element  2350  such that a top surface of the upper edge contact member  2360  is flush with a top surface the upper edge of the induction cooking vessel.  FIG. 23C  is a side view of a side wall  2375  of an induction cooking vessel with grooves  2380  in accordance with an illustrative embodiment. Each of the grooves  2380 , which are sized to fit the upper edge contact member  2360  of the induction element  2350 , includes a first side, a second side, and a base. While the side wall  2375  is depicted with  2  grooves  2380 , it is to be understood that each side wall of the cooking vessel may include fewer or additional grooves. 
       FIG. 23D  is a profile side view of a lid  2385  with flanges  2390  for an induction cooking vessel in accordance with an illustrative embodiment. The flanges  2390  are configured to align with the grooves  2380  such that a bottom surface  2395  of the lid  2385  is able to rest flush on the upper edge of the induction cooking vessel. In an illustrative embodiment, each of the flanges  2390  is hinged, or otherwise movable, such that they can be moved out of the way (i.e., outward to extend past the outer surface of the vessel) in the event that one or more induction elements  2350  are positioned in one or more grooves  2380  on the upper edge of the induction cooking vessel. In this way, the lid  2385  is able to sit flush on the upper edge regardless of the number of grooves  2380  that are holding induction elements. In another alternative embodiment, the upper edge of the induction cooking vessel can be a flat surface, and a lid for the cooking vessel can include one or more grooves sized to receive the upper edge contact member of the induction element such that the lid is able to rest flush upon the upper edge of the vessel while one or more induction elements are in use. 
       FIG. 24A  is a cross-sectional view of a cooking vessel  2400  in accordance with an illustrative embodiment. As shown, the cooking vessel  2400  includes a bottom wall  2405  and one or more sidewalls  2410 . In an embodiment in which the cooking vessel  2400  is cylindrical in shape, the cooking vessel includes a single (circular or elliptical) sidewall  2410 . In an embodiment in which the cooking vessel  2400  is square or rectangular in shape, the cooking vessel can include a plurality of sidewalls  2410 . The sidewall(s)  2410  include a plurality of hooks  2415 , each of which is configured to receive an induction element. While  FIG. 24A  depicts two columns of the hooks  2415 , it is to be understanding that the cooking vessel can include fewer or additional columns of hooks positioned about the interior surface of the cooking vessel. In an alternative embodiment, the hooks  2415  may not be in columns, but instead may be staggered rows or otherwise spaced about the interior surface of the vessel. In other embodiments, instead of hooks, the cooking vessel may include screws or other protrusions positioned about its surface and configured to receive induction elements. 
     In another embodiment, the hooks or other protrusions may be positioned on an exterior surface of the cooking vessel as opposed to the interior surface as shown. In such an embodiment, the induction elements and the hooks/protrusions do not contact the food/liquid in the interior of the cooking vessel.  FIG. 24B  is a cross-sectional view of a cooking vessel  2402  with external hooks/protrusions  2415  in accordance with an illustrative embodiment. The hooks/protrusions  2415  can be positioned around the entire exterior surface of the sidewall  2410   
       FIG. 24C  is an enlarged view of an induction element  2425  for use with the cooking vessel  2400  in accordance with an illustrative embodiment. The induction element  2425  is made of a ferromagnetic material that is heated responsive to received electromagnetic radiation. The induction element  2425  includes a body  2430  and a loop  2435  integrally connected (or otherwise mounted) to the body  2430 . The loop  2435  of the induction element  2425  forms an opening  2440  that allows the induction element  2425  to be hung from any of the hooks  2415  depicted in  FIGS. 24A and 24B . The user can position one (or a plurality) of the induction elements about the cooking vessel  2400  to perform targeted heating of the vessel&#39;s contents. In an alternative embodiment, the induction element  2425  may include only a body portion with a hole therein that allows the induction element  2425  to be hung from the hooks  2415 . In another alternative embodiment, the induction element  2425  may include a hook mounted to the body  2430  instead of a loop, and the hook is used to hang the induction element from the hooks  2415  in the cooking vessel  2400 . In another embodiment, the induction element may be available in a plurality of different sizes such that the user is able to select an appropriate size for the desired heating application (i.e., a larger induction element can be used for generating more heat, and a smaller induction element can be used for generating less heat). 
     In some of the embodiment of  FIGS. 23 and 24 , the induction element(s) are positioned in an interior of the cooking vessel such that they are in contact with the food/liquid that is being heated. In an alternative embodiment, the induction element(s) can be positioned such that they do not make direct contact with the food/liquid in the cooking vessel.  FIG. 25A  depicts a double wall cooking vessel  2500  in accordance with in illustrative embodiment. While the double wall cooking vessel  2500  is depicted as cylindrical in shape, in other embodiments the double wall cooking vessel can have a different shape such as square, rectangular, etc. 
     The double wall cooking vessel  2500  includes a handle  2505 , an inner side wall  2510 , and an outer side wall  2515 . In an illustrative embodiment, the handle  2505 , the inner side wall  2510 , and the outer side wall  2515  are made of a non-ferromagnetic material. Food/liquid to be heated is placed into the double wall cooking vessel  2500  such that it is in contact with the inner side wall  2510 , but not the outer side wall  2515 . A plurality of slots  2520  are formed between the inner side wall  2510  and the outer side wall  2515 . As shown, the double wall cooking vessel  2500  includes 6 slots spaced around the perimeter. In alternative embodiments, the double wall cooking vessel  2500  may include fewer or additional slots. The slots are formed from dividers that extend between the inner side wall  2510  and the outer side wall  2515 . In one embodiment, the slots  2520  can be symmetrically spaced about the perimeter of the vessel  2500  such that the slots  2520  are equidistant from one another. Alternatively, the spacing between slots may be asymmetric. In another embodiment, each of the slots  2520  is the same shape and size. Alternatively, the slots may be of different sizes and/or shapes. 
     Each of the slots  2520  is configured to receive an induction element that, upon receipt of electromagnetic radiation, heats the inner side wall  2510  such that food/liquid within the double wall cooking vessel  2500  is heated. The user is able to position as many induction elements into the slots  2520  as desired to achieve targeted heating of the contents of the vessel. In one embodiment, the inner side wall  2510  can be made from a first material having a first thermal conductivity and the outer side wall  2515  can be made from a second material having a second thermal conductivity, where the first thermal conductivity is higher than the second thermal conductivity. As a result, the outer side wall  2515  will remain cooler than the inner side wall  2510 , reducing the risk that the user will be burned. 
     In another embodiment, a bottom of the double wall cooking vessel  2500  can also include a double wall with one or more slots therein to receive induction elements. The one or more slots in the bottom double wall allow the user to also heat the contents of the vessel from the bottom thereof. 
     In one embodiment, the outer side wall of the double wall cooking vessel can include a plurality of slits that enable placement of a stopper such a height of the induction element can be adjusted by the user.  FIG. 25B  is a sectional view of a portion of an outer sidewall  2530  of a double wall cooking vessel in accordance with an illustrative embodiment. The portion of the outer sidewall  2530  depicted aligns with a slot  2535  (e.g., which can be similar to one of the slots  2520  of  FIG. 25A ) of the double wall cooking vessel. The portion of the outer sidewall  2530  includes slits  2540 , which are openings in the outer side wall of the cooking vessel that provide access to the slot  2535 . In an illustrative embodiment, each of the slots of the double wall cooking vessel can include one or more slits  2540 . Also, although 3 slits are shown, fewer or additional slits may be used in alternative embodiments. The slits  2540  are configured to receive a stopper to control a height of the induction element that is placed into the slot. The stopper, which is sized to fit within any of the slits  2540 , is used to support the induction element so that the induction element does not go all the way down to the bottom of the double wall cooking vessel  2500 . 
       FIG. 25C  depicts a stopper  2550  in accordance with an illustrative embodiment. The stopper  2550  includes an induction element support  2555 , a wall  2560 , and a handle  2565 . The stopper  2550  is sized to fit into any of the slits  2540  in the outer side wall of the vessel. Upon placement into one of the slits, the induction element rests upon the induction element support  2555 , which keeps the induction element at a desired height above the bottom of the cooking vessel. The wall  2560  rests upon the outer wall of the vessel, and the handle  2565  is used by the user to move and position the stopper  2550 . 
     As an example, if the user wishes for the induction element to reach the bottom of the double wall cooking vessel, no stopper is used. If the user wishes for the induction element to be close to (but not touching) the bottom of the vessel, the stopper  2550  is placed into the lowest slit  2540  prior to placement of the induction element. Similarly, the middle and top slits  2540  can be used by the user to achieve different distances from the bottom of the induction element to the bottom of the cooking vessel. 
     It should be understood that the disclosed embodiments have been described to provide the best illustration of the principles of the subject matter and its practical application to thereby enable one of ordinary skill in the art to utilize the system in various embodiments and with various modifications as are suited to the particular use contemplated. 
     The word “illustrative” is used herein to mean serving as an example, instance, or illustration. Any aspect or design described herein as “illustrative” is not necessarily to be construed as preferred or advantageous over other aspects or designs. Further, for the purposes of this disclosure and unless otherwise specified, “a” or “an” means “one or more”. 
     The foregoing description of illustrative embodiments of the invention has been presented for purposes of illustration and of description. It is not intended to be exhaustive or to limit the invention to the precise form disclosed, and modifications and variations are possible in light of the above teachings or may be acquired from practice of the invention. The embodiments were chosen and described in order to explain the principles of the invention and as practical applications of the invention to enable one skilled in the art to utilize the invention in various embodiments and with various modifications as suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims appended hereto and their equivalents.