![]() This may justly be termed an absolute scale, since its characteristic is quite independent of the physical properties of any specific substance."Īs Carnot's theorem is understood in modern thermodynamics to simply describe the maximum efficiency with which thermal energy can be converted to mechanical energy and the predicted maximum efficiency is a function of the ratio between the absolute temperatures of the heat source and heat sink: "The characteristic property of the scale which I now propose is, that all degrees have the same value that is, that a unit of heat descending from a body A at the temperature T° of this scale, to a body B at the temperature ( T − 1)°, would give out the same mechanical effect, whatever be the number T.
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