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farming , as we now associate the word , has been around for about 7,000 to 10,000 years . and when we think of farming , we imagine a farmer planting seeds , and later harvesting the crops . or maybe having cattle that they can allow to graze , and then using that cattle for either meat , or milk , or wool . but there... | and they were actually pretty scientific about how they did it . they would n't just go at the end of summer , when everything was hot , and ready to just blow up , and then start a fire that they could n't control . they would often do these in seasons knowing that it had a certain level of moisture in the air , it wa... | getting wool from cows would n't that be leather ? |
farming , as we now associate the word , has been around for about 7,000 to 10,000 years . and when we think of farming , we imagine a farmer planting seeds , and later harvesting the crops . or maybe having cattle that they can allow to graze , and then using that cattle for either meat , or milk , or wool . but there... | farming , as we now associate the word , has been around for about 7,000 to 10,000 years . and when we think of farming , we imagine a farmer planting seeds , and later harvesting the crops . | what are other examples of mega fauna ? |
farming , as we now associate the word , has been around for about 7,000 to 10,000 years . and when we think of farming , we imagine a farmer planting seeds , and later harvesting the crops . or maybe having cattle that they can allow to graze , and then using that cattle for either meat , or milk , or wool . but there... | so they have controlled burns . controlled fires . those controlled fires helped promote grassland . | it said with the brush building up , the summer would come & the fires ca n't be controlled , but how do you control the fires ? |
farming , as we now associate the word , has been around for about 7,000 to 10,000 years . and when we think of farming , we imagine a farmer planting seeds , and later harvesting the crops . or maybe having cattle that they can allow to graze , and then using that cattle for either meat , or milk , or wool . but there... | so it becomes more suitable for things that humans might want to eat , or get milk from , or whatever . and this type of farming is called firestick farming . and i think you can already imagine what it might involve . | how much is known about the long term ( local australian ) climate effects of firestick farming ? |
farming , as we now associate the word , has been around for about 7,000 to 10,000 years . and when we think of farming , we imagine a farmer planting seeds , and later harvesting the crops . or maybe having cattle that they can allow to graze , and then using that cattle for either meat , or milk , or wool . but there... | and then , when the fires do occur , the uncontrolled fires are less likely to be started during the winter , when the air is cool or when there might be some moisture . they 're more likely to occur in the dry season . so you have all this stuff build up . | is n't winter the most dry season ? |
farming , as we now associate the word , has been around for about 7,000 to 10,000 years . and when we think of farming , we imagine a farmer planting seeds , and later harvesting the crops . or maybe having cattle that they can allow to graze , and then using that cattle for either meat , or milk , or wool . but there... | and there 's some reason to believe that what the original australians did , on some level , was more nuanced and more fine-tuned than even what we do , in a modern sense , in controlled burns . so these controlled fires also prevented major uncontrollable fires . because what happens is if you do n't have these contro... | are n't uncontrollable fires really life-threatening for all organisms and humans ? |
farming , as we now associate the word , has been around for about 7,000 to 10,000 years . and when we think of farming , we imagine a farmer planting seeds , and later harvesting the crops . or maybe having cattle that they can allow to graze , and then using that cattle for either meat , or milk , or wool . but there... | it 's just neat to look at them . this is called diprotodon optatum . or , another way to think of it , the giant wombat . | how big exacally is the driptodon optatum ? |
farming , as we now associate the word , has been around for about 7,000 to 10,000 years . and when we think of farming , we imagine a farmer planting seeds , and later harvesting the crops . or maybe having cattle that they can allow to graze , and then using that cattle for either meat , or milk , or wool . but there... | and there 's fossils of the giant wombat around 40,000 , 50,000 years ago . but they disappeared with humans showing up . and there 's multiple ways that you can think about why they disappeared . | are wombats friendly to humans ? |
farming , as we now associate the word , has been around for about 7,000 to 10,000 years . and when we think of farming , we imagine a farmer planting seeds , and later harvesting the crops . or maybe having cattle that they can allow to graze , and then using that cattle for either meat , or milk , or wool . but there... | so they have controlled burns . controlled fires . those controlled fires helped promote grassland . | how long did the controlled fires burn ? |
farming , as we now associate the word , has been around for about 7,000 to 10,000 years . and when we think of farming , we imagine a farmer planting seeds , and later harvesting the crops . or maybe having cattle that they can allow to graze , and then using that cattle for either meat , or milk , or wool . but there... | so it becomes more suitable for things that humans might want to eat , or get milk from , or whatever . and this type of farming is called firestick farming . and i think you can already imagine what it might involve . | is it fire stick farming practices allowed by australian law ? |
farming , as we now associate the word , has been around for about 7,000 to 10,000 years . and when we think of farming , we imagine a farmer planting seeds , and later harvesting the crops . or maybe having cattle that they can allow to graze , and then using that cattle for either meat , or milk , or wool . but there... | and so what they would do is , is that we believe if you go back 50,000 or 60,000 years before the first aboriginal australians settled australia , australia had much more forest . it still has forest . this is a modern picture , obviously , of an australian forest . | do the native people in australia still use this method at all ? |
farming , as we now associate the word , has been around for about 7,000 to 10,000 years . and when we think of farming , we imagine a farmer planting seeds , and later harvesting the crops . or maybe having cattle that they can allow to graze , and then using that cattle for either meat , or milk , or wool . but there... | so it becomes more suitable for things that humans might want to eat , or get milk from , or whatever . and this type of farming is called firestick farming . and i think you can already imagine what it might involve . | how did firestick farming got more scientific ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | and that light , so this is radiant energy . radiant energy . and that radiant energy , is due to the heat in the filament right over here , as the electrons go through it , it generates heat , so you have thermal energy . | energy can be destroyed or created.does it mean that `` heat energy '' can be transformed into a more useful type of energy that has the ability to do work ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | and that 's actually the heart of the first law of thermodynamics which we touched on on the introduction to energy video . and the first law of thermodynamics tell us that energy , this is an important one , i 'm going to write it down , energy can not be created or destroyed . can not be created , or destroyed . it c... | why ca n't energy be created or destroyed ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | and that friction , you 're going to have molecules rubbing up against each other , that 's also going to be converted into heat . and so that , because that kinetic energy gets sapped off , gets keeping sapped away from the friction , which is essentially converting the kinetic energy to heat energy , eventually you w... | does n't the sun create light energy or when we are coasting on a bicycle do n't we create kinetic energy ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | and that light , so this is radiant energy . radiant energy . and that radiant energy , is due to the heat in the filament right over here , as the electrons go through it , it generates heat , so you have thermal energy . so you have thermal energy as well . | where does all of the heat energy go ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | radiant energy . and that radiant energy , is due to the heat in the filament right over here , as the electrons go through it , it generates heat , so you have thermal energy . so you have thermal energy as well . | where does all of the heat go ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . | is n't sal confusing the 1st law of thermodynamics with the law of conservation of energy ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | and so that , it 's that potential energy we convert to this kinetic energy of the electrons , which is really in the form of a current , and then that gets converted into thermal energy and radiant energy . now what happens after , let 's say you unplug the light , the light goes dark , what happened to all of that en... | if the light heats up the glass bulb , then how is it intact ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | you have the chemical potential energy of the fuel here being , you have combustion occurring , and then that gets converted into the thermal energy , and the radiant energy of what we associate with fire . and that does n't disappear , it just keeps radiating outwards , the radiant energy just keeps radiating outward ... | should n't the glass overheat and explode ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | so you have thermal energy as well . thermal energy . but where does this radiant and thermal energy come from ? | is thermal energy and kinetic energy the same thing ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | and that light , so this is radiant energy . radiant energy . and that radiant energy , is due to the heat in the filament right over here , as the electrons go through it , it generates heat , so you have thermal energy . | what happens to that energy which system use ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' | what is the origin of bing bang ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . | 1 laws of thermodynamics apply its rules to a refrigerator when a hot soup is placed inside it ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | and that light , so this is radiant energy . radiant energy . and that radiant energy , is due to the heat in the filament right over here , as the electrons go through it , it generates heat , so you have thermal energy . | if energy is unable to be destroyed then what does that mean when we as people fall asleep ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | and that light , so this is radiant energy . radiant energy . and that radiant energy , is due to the heat in the filament right over here , as the electrons go through it , it generates heat , so you have thermal energy . | does all the kenetic energy you use become potential energy for the next day or whenever you wake up ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | and that light , so this is radiant energy . radiant energy . and that radiant energy , is due to the heat in the filament right over here , as the electrons go through it , it generates heat , so you have thermal energy . | if energy is n't being destroyed , then why is it that we have to work so hard to make electricity ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | and that friction , you 're going to have molecules rubbing up against each other , that 's also going to be converted into heat . and so that , because that kinetic energy gets sapped off , gets keeping sapped away from the friction , which is essentially converting the kinetic energy to heat energy , eventually you w... | why ca n't you turn heat into energy ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | they 're moving through the filament which has some resistance , and that generates heat . so the electrons are moving through this , and as they move through that resistor , they generate heat . so you actually have the kinetic energy of the electrons . | does snow generate heat when it falls ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | well , while they were rolling , there was some air resistance , so they 're bumping against these , the air molecules , and it 's really friction due to air . and that energy is essentially going to be converted to heat . and one trend that you 're going to see very frequently , is as systems progress , a lot more of ... | if energy can not be created or destroyed and can only be converted , how does the theory of heat death work ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | and that light , so this is radiant energy . radiant energy . and that radiant energy , is due to the heat in the filament right over here , as the electrons go through it , it generates heat , so you have thermal energy . | and why there was mention of chemical energy ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | and i could keep going on and on . you have the chemical potential energy of the fuel here being , you have combustion occurring , and then that gets converted into the thermal energy , and the radiant energy of what we associate with fire . and that does n't disappear , it just keeps radiating outwards , the radiant e... | what is the chemical reaction here ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | and so now it 's all , or a lot of it has been stored up in potential energy . but he would have also generated heat , his muscles would have generated heat . even the act of moving it through the air is going to be some heat in the air , some friction with it . | does heat really transfer from hot object to cold object ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | and that light , so this is radiant energy . radiant energy . and that radiant energy , is due to the heat in the filament right over here , as the electrons go through it , it generates heat , so you have thermal energy . | at somewhere in sal said that energy that 'energycan be transferred ' , my question to you is that does transferring energy require energy ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | and that light , so this is radiant energy . radiant energy . and that radiant energy , is due to the heat in the filament right over here , as the electrons go through it , it generates heat , so you have thermal energy . | if the energy is transferred , then where does the energy goes when we use radio ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | but what happens once he falls into the water ? well , then that energy 's going to be transferred , as you 're going to have these waves of water move away . and it will also increase friction , so , well actually he would have had friction as he fell down , so that would have generated some heat , and there would hav... | where does it specifically transfers after the sound waves reaches our brain ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | it can only only be converted only be converted , i 'm having trouble writing today . converted from one form , from one form , to another . or you could transfer it but you 're not going to , you 're not going to create or destroy it . | you know how sal said that energy can be converted from one form to another ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | so the thermal energy is going to be transferred , and that radiant energy is going to move outward . and it could be used , it could be converted into other forms of energy , most likely thermal energy , it is also probably going to heat up other things . well , what about a pool table ? | for example inside a box , we could put a light bulb , all the heat and kinetic energy that dissipates could be recollected then converted into chemical energy , thus creating a light bulb that would last forever , ( unless the actual bulb broke ) would this be possible to do , and if not , why ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | and that light , so this is radiant energy . radiant energy . and that radiant energy , is due to the heat in the filament right over here , as the electrons go through it , it generates heat , so you have thermal energy . | says tht energy can be destroyed ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . | is nt it against of 1st law of thermodynamics ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | and that light , so this is radiant energy . radiant energy . and that radiant energy , is due to the heat in the filament right over here , as the electrons go through it , it generates heat , so you have thermal energy . | if energy can not be created or destroyed , are you saying that there was potential energy for an infinite amount of years before the big bang theory ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | and that light , so this is radiant energy . radiant energy . and that radiant energy , is due to the heat in the filament right over here , as the electrons go through it , it generates heat , so you have thermal energy . | how many types of energy are there and what are they ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | and that light , so this is radiant energy . radiant energy . and that radiant energy , is due to the heat in the filament right over here , as the electrons go through it , it generates heat , so you have thermal energy . | can we store sound energy ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | and that friction , you 're going to have molecules rubbing up against each other , that 's also going to be converted into heat . and so that , because that kinetic energy gets sapped off , gets keeping sapped away from the friction , which is essentially converting the kinetic energy to heat energy , eventually you w... | is n't heat just another form of kinetic energy ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | and that light , so this is radiant energy . radiant energy . and that radiant energy , is due to the heat in the filament right over here , as the electrons go through it , it generates heat , so you have thermal energy . | what is heat energy in scientific terms or what is heat energy at the atomic level ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | and that light , so this is radiant energy . radiant energy . and that radiant energy , is due to the heat in the filament right over here , as the electrons go through it , it generates heat , so you have thermal energy . | is it true that an exergonic reaction will result in a negative free energy value within the gibbs free energy equation ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | and that light , so this is radiant energy . radiant energy . and that radiant energy , is due to the heat in the filament right over here , as the electrons go through it , it generates heat , so you have thermal energy . | are electromagnetic waves considered energy ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | it can only only be converted only be converted , i 'm having trouble writing today . converted from one form , from one form , to another . or you could transfer it but you 're not going to , you 're not going to create or destroy it . | are the various forms of energy dependent on each other for their transformation from one form to the other ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | they 're moving through the filament which has some resistance , and that generates heat . so the electrons are moving through this , and as they move through that resistor , they generate heat . so you actually have the kinetic energy of the electrons . | do the electrons that pass through the electrical cables and generate electricity come from the metal atoms with which these cables are made ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | and that 's actually the heart of the first law of thermodynamics which we touched on on the introduction to energy video . and the first law of thermodynamics tell us that energy , this is an important one , i 'm going to write it down , energy can not be created or destroyed . can not be created , or destroyed . | so the first law of thermodynamics explains how energy changes form and will never be created or destroyed ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . | what is `` matter '' in thermodynamics anyway ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | and that light , so this is radiant energy . radiant energy . and that radiant energy , is due to the heat in the filament right over here , as the electrons go through it , it generates heat , so you have thermal energy . | why do we consider electricity to be in potential energy rather than kinetic energy ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | and that 's actually the heart of the first law of thermodynamics which we touched on on the introduction to energy video . and the first law of thermodynamics tell us that energy , this is an important one , i 'm going to write it down , energy can not be created or destroyed . can not be created , or destroyed . | doesnt einstein 's law e=mc^2 disprove the first law of themodnamics cuz this equation proves that energy can be created from matter ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | is it still there ? well yeah , that thermal energy is going to continue to dissipate through the system . and this right over here would be an open system , it 's going to , the air inside the lightbulb , you ca n't fully see the lightbulb right here , but it looks something like this . | when writing formula for internal energy , why did n't we consider the work done by the system and the work done on the system at the same time ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | and that light , so this is radiant energy . radiant energy . and that radiant energy , is due to the heat in the filament right over here , as the electrons go through it , it generates heat , so you have thermal energy . | so pretty much all the energy in the universe is just recycled in one way or the other ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | so you have thermal energy as well . thermal energy . but where does this radiant and thermal energy come from ? | when the thermal energy going to the air is there destination for these air molecues ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | and that light , so this is radiant energy . radiant energy . and that radiant energy , is due to the heat in the filament right over here , as the electrons go through it , it generates heat , so you have thermal energy . | or it just stored that energy in the armostphere and due to the sir molecues is infinity we could n't feel the hot that inside the air molecues around us ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | and that 's actually the heart of the first law of thermodynamics which we touched on on the introduction to energy video . and the first law of thermodynamics tell us that energy , this is an important one , i 'm going to write it down , energy can not be created or destroyed . can not be created , or destroyed . it c... | if energy can not be created nor destroyed then what happens inside a black hole ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | converted from one form , from one form , to another . or you could transfer it but you 're not going to , you 're not going to create or destroy it . and the whole thing that i , the rest of this video i just want to really have you internalize that , and i want to look at a bunch of examples and think about , well , ... | does a black hole destroy everything it sucks in or the information is lurking somewhere inside it ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | and that light , so this is radiant energy . radiant energy . and that radiant energy , is due to the heat in the filament right over here , as the electrons go through it , it generates heat , so you have thermal energy . | why is radiant energy considered as an energy type ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | and that 's actually the heart of the first law of thermodynamics which we touched on on the introduction to energy video . and the first law of thermodynamics tell us that energy , this is an important one , i 'm going to write it down , energy can not be created or destroyed . can not be created , or destroyed . | so , why ca n't we say that we have created energy and defy the first law of thermodynamics ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | well , the most obvious form of energy that you see here , and this , the whole point of a lightbulb , is you see the radiant energy , you see the you see the electromagnetic waves , the light , being emitted from it . and that light , so this is radiant energy . radiant energy . | what does light energy turn into ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | and so now it 's all , or a lot of it has been stored up in potential energy . but he would have also generated heat , his muscles would have generated heat . even the act of moving it through the air is going to be some heat in the air , some friction with it . | can anyone explain how lightning is produced or generated ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dynamics , the properties of temperature , how do they move , how does temperature behave ? and that 's pretty much what thermodynamics is , it 's about , it 's the study of heat and temperat... | i do n't know where to ask this question , what is meant by glass transition temperature ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | and this right over here would be an open system , it 's going to , the air inside the lightbulb , you ca n't fully see the lightbulb right here , but it looks something like this . that 's going to heat up , but then it 's going to heat up the glass surrounding the lightbulb , and that 's going to heat up the surround... | is glass crystalline or amorphous or partially crystalline and partially amorphous ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | and this right over here would be an open system , it 's going to , the air inside the lightbulb , you ca n't fully see the lightbulb right here , but it looks something like this . that 's going to heat up , but then it 's going to heat up the glass surrounding the lightbulb , and that 's going to heat up the surround... | why glass turns milky when it becomes old ? |
let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' and you could tell from the roots of this word . you have thermo , related to thermal , it 's dealing with temperature . and the dyna... | let 's now explore the first law of thermodynamics . and before even talking about the first law of thermodynamics , some of you might be saying , `` well , what are thermodynamics ? '' | what are isotropic and anisotropic solids ? |
in the last video we were talking about the era of reconstruction and how after the civil war when the 13th amendment to the constitution outlawed slavery many southern states enacted laws known as black codes , which in many cases were really just slavery by another name . they prevented african americans from voting... | in fact they also passed the 15th amendment two years later in 1870 , which said voting rights are included among these citizenship rights guaranteed in the 14th amendment . i should mention that these voting rights were only for african american men as women will not get the right to vote until 1920 . so from the 14th... | does n't it already say in the fourteenth amendment expressly say that all 21-year-old men have the right to vote except for if they participated in rebellion or a crime ? |
in the last video we were talking about the era of reconstruction and how after the civil war when the 13th amendment to the constitution outlawed slavery many southern states enacted laws known as black codes , which in many cases were really just slavery by another name . they prevented african americans from voting... | in the last video we were talking about the era of reconstruction and how after the civil war when the 13th amendment to the constitution outlawed slavery many southern states enacted laws known as black codes , which in many cases were really just slavery by another name . they prevented african americans from voting... | how did the era of reconstruction come about ? |
in the last video we were talking about the era of reconstruction and how after the civil war when the 13th amendment to the constitution outlawed slavery many southern states enacted laws known as black codes , which in many cases were really just slavery by another name . they prevented african americans from voting... | so what happened in 1877 ? which is generally known as the end of reconstruction and the beginning of this period of jim crow segregation . well we 'll get to that in the next video . | how did the reconstruction reform america as a whole ? |
in the last video we were talking about the era of reconstruction and how after the civil war when the 13th amendment to the constitution outlawed slavery many southern states enacted laws known as black codes , which in many cases were really just slavery by another name . they prevented african americans from voting... | in the last video we were talking about the era of reconstruction and how after the civil war when the 13th amendment to the constitution outlawed slavery many southern states enacted laws known as black codes , which in many cases were really just slavery by another name . they prevented african americans from voting... | when did slavery really start ? |
in the last video we were talking about the era of reconstruction and how after the civil war when the 13th amendment to the constitution outlawed slavery many southern states enacted laws known as black codes , which in many cases were really just slavery by another name . they prevented african americans from voting... | in fact they also passed the 15th amendment two years later in 1870 , which said voting rights are included among these citizenship rights guaranteed in the 14th amendment . i should mention that these voting rights were only for african american men as women will not get the right to vote until 1920 . so from the 14th... | what made some white people think they could buy and own african americans ? |
in the last video we were talking about the era of reconstruction and how after the civil war when the 13th amendment to the constitution outlawed slavery many southern states enacted laws known as black codes , which in many cases were really just slavery by another name . they prevented african americans from voting... | in the last video we were talking about the era of reconstruction and how after the civil war when the 13th amendment to the constitution outlawed slavery many southern states enacted laws known as black codes , which in many cases were really just slavery by another name . they prevented african americans from voting... | why where the black codes created and what did they help do for the people ? |
in the last video we were talking about the era of reconstruction and how after the civil war when the 13th amendment to the constitution outlawed slavery many southern states enacted laws known as black codes , which in many cases were really just slavery by another name . they prevented african americans from voting... | this era of reconstruction was really a continuation of the civil war where troops from the north tried to enforce the 14th amendment , tried to enforce the end of slavery and the citizenship of african americans with really implacable resistance from white southerners . so by 1877 , only two states were left that stil... | why did those two states still have troops if the rest of the states had rewritten their constitutions to acknowledge the 14th amendment ? |
in the last video we were talking about the era of reconstruction and how after the civil war when the 13th amendment to the constitution outlawed slavery many southern states enacted laws known as black codes , which in many cases were really just slavery by another name . they prevented african americans from voting... | in fact they also passed the 15th amendment two years later in 1870 , which said voting rights are included among these citizenship rights guaranteed in the 14th amendment . i should mention that these voting rights were only for african american men as women will not get the right to vote until 1920 . so from the 14th... | if african american men got the right to vote in 1870 and women did n't get the right to vote until 1920 , did african american women also get the right to vote along with white women in 1920 , or was it in the 1960s when civil rights movement happened ? |
in the last video we were talking about the era of reconstruction and how after the civil war when the 13th amendment to the constitution outlawed slavery many southern states enacted laws known as black codes , which in many cases were really just slavery by another name . they prevented african americans from voting... | in the last video we were talking about the era of reconstruction and how after the civil war when the 13th amendment to the constitution outlawed slavery many southern states enacted laws known as black codes , which in many cases were really just slavery by another name . they prevented african americans from voting... | who agreed to having slavery ? |
in the last video we were talking about the era of reconstruction and how after the civil war when the 13th amendment to the constitution outlawed slavery many southern states enacted laws known as black codes , which in many cases were really just slavery by another name . they prevented african americans from voting... | in fact they also passed the 15th amendment two years later in 1870 , which said voting rights are included among these citizenship rights guaranteed in the 14th amendment . i should mention that these voting rights were only for african american men as women will not get the right to vote until 1920 . so from the 14th... | what made the u.s want to get african americans to be their slaves ? |
in the last video we were talking about the era of reconstruction and how after the civil war when the 13th amendment to the constitution outlawed slavery many southern states enacted laws known as black codes , which in many cases were really just slavery by another name . they prevented african americans from voting... | in fact they also passed the 15th amendment two years later in 1870 , which said voting rights are included among these citizenship rights guaranteed in the 14th amendment . i should mention that these voting rights were only for african american men as women will not get the right to vote until 1920 . so from the 14th... | so black women and white women still could n't vote ? |
in the last video we were talking about the era of reconstruction and how after the civil war when the 13th amendment to the constitution outlawed slavery many southern states enacted laws known as black codes , which in many cases were really just slavery by another name . they prevented african americans from voting... | in fact they also passed the 15th amendment two years later in 1870 , which said voting rights are included among these citizenship rights guaranteed in the 14th amendment . i should mention that these voting rights were only for african american men as women will not get the right to vote until 1920 . so from the 14th... | when was the end of slavery for the african american ? |
in the last video we were talking about the era of reconstruction and how after the civil war when the 13th amendment to the constitution outlawed slavery many southern states enacted laws known as black codes , which in many cases were really just slavery by another name . they prevented african americans from voting... | in response to the black codes , congress passed the 14th amendment to the constitution and the 14th amendment ... guaranteed that anyone born in the united states , regardless of previous condition of servitude , had full citizenship , meaning they 're entitled to all the rights and privileges of being a citizen , and... | where did slavery come from and why could n't they vote ? |
in the last video we were talking about the era of reconstruction and how after the civil war when the 13th amendment to the constitution outlawed slavery many southern states enacted laws known as black codes , which in many cases were really just slavery by another name . they prevented african americans from voting... | now to enforce the 14th amendment , congress sent federal troops to the states in the south , divided the southern region up into military zones and said that the south would be occupied by federal troops until the states rewrote their constitutions to recognize the 14th amendment , in effect to give equal citizenship ... | and speaking of the 15th amendment , did ulysses grant want it to include women ? |
let me introduce you to frank . now , for most of the last year , frank 's digestive system , it 's just not been feeling quite right . he 's been having intermittent , although fairly frequent abdominal pain as well as irregular bowel movements . and at times he 's not able to have a bowel movement . then at other ti... | unfortunately , there are two different conditions with very similar acronyms . they are irritable bowel syndrome or ibs and inflammatory bowel disease or ibd . let 's learn about the differences between ibs and ibd . | why does the video title say inflammatory bowel disease vs irritable bowel `` disease '' ? |
let me introduce you to frank . now , for most of the last year , frank 's digestive system , it 's just not been feeling quite right . he 's been having intermittent , although fairly frequent abdominal pain as well as irregular bowel movements . and at times he 's not able to have a bowel movement . then at other ti... | unfortunately , there are two different conditions with very similar acronyms . they are irritable bowel syndrome or ibs and inflammatory bowel disease or ibd . let 's learn about the differences between ibs and ibd . | is it possible for a person to have both irritable bowel syndrome and inflammatory bowel disease ? |
let me introduce you to frank . now , for most of the last year , frank 's digestive system , it 's just not been feeling quite right . he 's been having intermittent , although fairly frequent abdominal pain as well as irregular bowel movements . and at times he 's not able to have a bowel movement . then at other ti... | unfortunately , there are two different conditions with very similar acronyms . they are irritable bowel syndrome or ibs and inflammatory bowel disease or ibd . let 's learn about the differences between ibs and ibd . so let 's start on the left here with irritable bowel syndrome or as it 's more commonly referred to ,... | what age do you typically get ibs or ibd ? |
we 're asked , what time is it ? so first , we want to look at the hour hand , which is the shorter hand , and see where it is pointing . so this right over here would have been 12 o'clock , 1 o'clock , 2 o'clock , 3 o'clock , 4 o'clock . and it looks like it 's a little bit past 4 o'clock . so we are in the fourth hou... | we 're asked , what time is it ? so first , we want to look at the hour hand , which is the shorter hand , and see where it is pointing . | what does am and pm stand for ? |
we 're asked , what time is it ? so first , we want to look at the hour hand , which is the shorter hand , and see where it is pointing . so this right over here would have been 12 o'clock , 1 o'clock , 2 o'clock , 3 o'clock , 4 o'clock . and it looks like it 's a little bit past 4 o'clock . so we are in the fourth hou... | so we are in the 10th hour . and how many minutes past the hour are we ? so this would be 0 , 5 , 10 , 15 , 20 minutes past the hour . | how will i know how many exact minutes it is when the clock is not labeled ? |
we 're asked , what time is it ? so first , we want to look at the hour hand , which is the shorter hand , and see where it is pointing . so this right over here would have been 12 o'clock , 1 o'clock , 2 o'clock , 3 o'clock , 4 o'clock . and it looks like it 's a little bit past 4 o'clock . so we are in the fourth hou... | and this is exactly halfway around the clock . and so half of 60 is 30 . let 's do one more . | where doses the clock show 6 as 30 minuts or half an hour ? |
we 're asked , what time is it ? so first , we want to look at the hour hand , which is the shorter hand , and see where it is pointing . so this right over here would have been 12 o'clock , 1 o'clock , 2 o'clock , 3 o'clock , 4 o'clock . and it looks like it 's a little bit past 4 o'clock . so we are in the fourth hou... | so first , we want to look at the hour hand , which is the shorter hand , and see where it is pointing . so this right over here would have been 12 o'clock , 1 o'clock , 2 o'clock , 3 o'clock , 4 o'clock . and it looks like it 's a little bit past 4 o'clock . | if the world were like a clock , how would we tell time if we lived on mars ? |
we 're asked , what time is it ? so first , we want to look at the hour hand , which is the shorter hand , and see where it is pointing . so this right over here would have been 12 o'clock , 1 o'clock , 2 o'clock , 3 o'clock , 4 o'clock . and it looks like it 's a little bit past 4 o'clock . so we are in the fourth hou... | so we are in the 10th hour . and how many minutes past the hour are we ? so this would be 0 , 5 , 10 , 15 , 20 minutes past the hour . | how will i know how many exact minutes it is when the clock is not labeled ? |
we 're asked , what time is it ? so first , we want to look at the hour hand , which is the shorter hand , and see where it is pointing . so this right over here would have been 12 o'clock , 1 o'clock , 2 o'clock , 3 o'clock , 4 o'clock . and it looks like it 's a little bit past 4 o'clock . so we are in the fourth hou... | we 're asked , what time is it ? so first , we want to look at the hour hand , which is the shorter hand , and see where it is pointing . | why are seasons different in the northern hemisphere and the southern hemisphere ? |
we 're asked , what time is it ? so first , we want to look at the hour hand , which is the shorter hand , and see where it is pointing . so this right over here would have been 12 o'clock , 1 o'clock , 2 o'clock , 3 o'clock , 4 o'clock . and it looks like it 's a little bit past 4 o'clock . so we are in the fourth hou... | let 's do a few more . what time is it ? so first , we want to look at the hour hand . | does time depend on the position of the sun towards earth ? |
we 're asked , what time is it ? so first , we want to look at the hour hand , which is the shorter hand , and see where it is pointing . so this right over here would have been 12 o'clock , 1 o'clock , 2 o'clock , 3 o'clock , 4 o'clock . and it looks like it 's a little bit past 4 o'clock . so we are in the fourth hou... | we 're asked , what time is it ? so first , we want to look at the hour hand , which is the shorter hand , and see where it is pointing . | why do we need a.m. and p.m. ? |
we 're asked , what time is it ? so first , we want to look at the hour hand , which is the shorter hand , and see where it is pointing . so this right over here would have been 12 o'clock , 1 o'clock , 2 o'clock , 3 o'clock , 4 o'clock . and it looks like it 's a little bit past 4 o'clock . so we are in the fourth hou... | so first , we want to look at the hour hand , which is the shorter hand , and see where it is pointing . so this right over here would have been 12 o'clock , 1 o'clock , 2 o'clock , 3 o'clock , 4 o'clock . and it looks like it 's a little bit past 4 o'clock . | why does the clock only go to twelve ? |
we 're asked , what time is it ? so first , we want to look at the hour hand , which is the shorter hand , and see where it is pointing . so this right over here would have been 12 o'clock , 1 o'clock , 2 o'clock , 3 o'clock , 4 o'clock . and it looks like it 's a little bit past 4 o'clock . so we are in the fourth hou... | we 're asked , what time is it ? so first , we want to look at the hour hand , which is the shorter hand , and see where it is pointing . | what does a.m. have to with morning and p.m. have to do at night ? |
we 're asked , what time is it ? so first , we want to look at the hour hand , which is the shorter hand , and see where it is pointing . so this right over here would have been 12 o'clock , 1 o'clock , 2 o'clock , 3 o'clock , 4 o'clock . and it looks like it 's a little bit past 4 o'clock . so we are in the fourth hou... | we 're asked , what time is it ? so first , we want to look at the hour hand , which is the shorter hand , and see where it is pointing . | why do a.m. and p.m. have their own names ? |
we 're asked , what time is it ? so first , we want to look at the hour hand , which is the shorter hand , and see where it is pointing . so this right over here would have been 12 o'clock , 1 o'clock , 2 o'clock , 3 o'clock , 4 o'clock . and it looks like it 's a little bit past 4 o'clock . so we are in the fourth hou... | we 're asked , what time is it ? so first , we want to look at the hour hand , which is the shorter hand , and see where it is pointing . | why does sal have to take so long , and talk so slow ? |
we 're asked , what time is it ? so first , we want to look at the hour hand , which is the shorter hand , and see where it is pointing . so this right over here would have been 12 o'clock , 1 o'clock , 2 o'clock , 3 o'clock , 4 o'clock . and it looks like it 's a little bit past 4 o'clock . so we are in the fourth hou... | we 're asked , what time is it ? so first , we want to look at the hour hand , which is the shorter hand , and see where it is pointing . so this right over here would have been 12 o'clock , 1 o'clock , 2 o'clock , 3 o'clock , 4 o'clock . | what would happen if the hour hand was in between a mark and what would happen if the short hand was in between a mark ? |
we 're asked , what time is it ? so first , we want to look at the hour hand , which is the shorter hand , and see where it is pointing . so this right over here would have been 12 o'clock , 1 o'clock , 2 o'clock , 3 o'clock , 4 o'clock . and it looks like it 's a little bit past 4 o'clock . so we are in the fourth hou... | it 's 9:30 . and that also might make sense to you , because we know there are 60 minutes in an hour . and this is exactly halfway around the clock . | how did people make seconds , minutes , hours , days , weeks , months , years , decades , and centuries ? |
we 're asked , what time is it ? so first , we want to look at the hour hand , which is the shorter hand , and see where it is pointing . so this right over here would have been 12 o'clock , 1 o'clock , 2 o'clock , 3 o'clock , 4 o'clock . and it looks like it 's a little bit past 4 o'clock . so we are in the fourth hou... | and that also might make sense to you , because we know there are 60 minutes in an hour . and this is exactly halfway around the clock . and so half of 60 is 30 . | if it takes earth 24 hours to spin all the way around ( 360 degrees ) than how many hours , days , weeks , months , or years does it take for jupiter to completely turn around ? |
we 're asked , what time is it ? so first , we want to look at the hour hand , which is the shorter hand , and see where it is pointing . so this right over here would have been 12 o'clock , 1 o'clock , 2 o'clock , 3 o'clock , 4 o'clock . and it looks like it 's a little bit past 4 o'clock . so we are in the fourth hou... | so first , we want to look at the hour hand , which is the shorter hand , and see where it is pointing . so this right over here would have been 12 o'clock , 1 o'clock , 2 o'clock , 3 o'clock , 4 o'clock . and it looks like it 's a little bit past 4 o'clock . | why ca n't there be a digital and hands clock toughter ? |
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