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I can take a heat pack, like the kind you buy at a pharmacy. Break it up. It gets hot.
买来的热装罐在里面打破,它就变热了。
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There is a heat bath here that keeps the temperature constant.
这里有一个热库,来保持温度不变。
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Suppose I've got a heat-seeking missile which tracks down the plane.
假设有一个热追踪导弹,正在追踪一架飞机
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She's stuck to a -- this is remarkable: she's stuck to a "marble venomed seat smeared with gums of glutinous heat."
这个值得注意，她坚持坐在,涂满胶状树胶的邪恶石头凳子上“
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So Aaron, feeling the heat, makes a golden calf, and the people bow down to it, and someone declares, "This is your God, oh Israel, who brought you out of the land of Egypt."
所以亚伦，感受到躁动，造了一只金牛犊，人们朝它下拜，有人说，“这就是上帝，犹太人，这就是把你们带出埃及的上帝“
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King Goll is a mythical Irish ruler who goes mad in the heat of battle.
郭尔王是传说中的爱尔兰统治者,他在战斗激烈时发疯了。
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The heater is on, it's producing heat until a negative signal is registered, 'oh we've gone too high', and then it turns off.
加热器会开着,一直产生热量直到它得到一个关闭的信号,噢我们弄得太热了,然后就关闭了
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You've just built a heat engine.
加热使压强增加。
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Or I could have a non-adiabatic, I could take the same temperature change, by taking a flame, or a heat source and heating up my substance. So, clearly q is going to depend on the path.
也能改变温度，绝热指的是没有热传递，在非绝热条件下，也同样可以升温,比如用火或者热源加热，这样，q也应当与路径有关。
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But it's a good story, Joule decided that there must be a direct relationship between work and heat.
所以说，这只是一个不错的故事而已，焦耳认为功和热之间,一定具有某种直接的联系。
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So here, I'm going to have delta H, is just the sum for all the products of delta heat of formation right? Here I'm going to put together all the products. So this is a positive heat of formation.
所以这里△H就是所有生成物的,生成热的和,对吧？这里,我要把元素组合成所有这些,生成物，所以这里是正的生成热。
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But this is a compound, right, it has some non-zero heat of formation from the elements. So is water, right?
但这是种化合物，对吧？,它具有非零的生成热,水也是一样，对吧？
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So, we do an integral over a path, dT for the heat capacity along that path, dT.
因此，我们沿着路径做一个积分，热容。
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To ask questions like how much heat is released in a chemical reaction that takes place at constant temperature.
当我们想要知道,当一个化学反应在恒定的温度下发生时,会放出多少热量时。
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One is that he observed when people were machining cannon barrels, a lot of heat was generated, and there was a lot of work done.
第一种说法说焦耳发现,制作加农炮筒时，会产生大量的热，同时这中间有大量的做功。
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a You know that what will happen is that heat will flow from a to b from b to c and from a to c. That's common-sense.
你知道会发生的是热量从流向,从流向,以及从流向。
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