you can add heat to an object, you cannot say that "an object contains a certain quantity of heat." This is very different from the case of the fuel in your car: you can add fuel to your car, and you are quite entitled to say that your car "contains a certain quantity of fuel". You even have a gauge for measuring it! But heat is quite different. Objects do not and cannot have gauges which read out how much heat they contain, because heat only makes sense when it is "in transit".1To see this, consider your co
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