During the mid to late 1980's, compact discs began to take over both the audio and computer program market. Similar to CD-ROM drives, DVD players use light beams to read the information from the surface of a disc. Capacitance - Discovered around 1745 independently by Ewald Christian von Kliest and Pieter van Musschenbroek, capacitance is the property of an electric conductor that allows the storage of an electric charge. Capacitance is the foundation for storing energy in an electric field between two conducting bodies. Inductance - Defined as the property of an electric circuit by which a changing magnetic field creates an electromotive force in that circuit or a nearby circuit.
Inductance is the basic principle for the operation of electric generators.
Resistance - Resistance is the property of a substance at the molecular level that hinders the flow of electric current through it. High resistance to electric flow is a requisite for insulators, while conductors require a low resistance. Batteries - Consisting of two or more connected cells, batteries provide a direct current by converting chemical energy to electrical energy. The different types of batteries we use require different components for production and operation. Interactive Java Tutorials - Our interactive Java tutorials have been developed in order to assist with the understanding of the principles, physics, and devices used in electricity and magnetism, such as transformers, electrophoresis, and lightning.