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Covers the study of (mostly homogeneous) macroscopic systems from a heat/energy/entropy point of view. Consider also using tag: [statistical-mechanics].

4
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The key feature of the Carnot cycle isn't so much it's particular shape on a PV diagram, but the fact that it alternately follows adiabats and isotherms through state space. In other words, it is a re …
answered Sep 17 '18 by Ricky Tensor
27
votes
Yes, both bodies radiate, including the cooler one. The warmer one puts out more power in its radiation, proportional to $T^4$ just as you say. The amount of radiation depends on absolute temperature, …
answered Aug 19 '18 by Ricky Tensor