From its presentation here, it seems like the terminology is pretty misleading. Here they are: energyeducation. A bigger temperature difference between the hot reservoir and the cold reservoir equates to more efficiency of the heat engine.
Add a comment. Active Oldest Votes. Improve this answer. Acccumulation Acccumulation 7, 12 12 silver badges 29 29 bronze badges. It was the kind of answer I wanted. It seems to me they just say that temperature must be positive which in some cases is not true, eg fuw. The fact that higher temperature means higher entropy is related to stability, and in doing statistical mechanics we can end up with unstable configurations; see eg arxiv. For the result in equilibrium you can see any good book about equilibrium thermodynamics, and I recommend these four works besides: A.
Regarding the non-equilibrium case you can take a look at M. Thank you regardless. That is, a system at equilibrium must have a positive heat capacity? Are you familiar with partial derivatives? Does it look OK for you? I appreciate all the time you took. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password.
Post as a guest Name. Email Required, but never shown. Featured on Meta. Now live: A fully responsive profile. Linked Related 3. This one is also easy to visualize. If an atom has more space to bounce around, it will bounce more. Gases and plasmas have large amounts of entropy when compared to liquids and solids.
We just talked about this idea. If you give atoms more room to move around, they will move. You can also think about it in terms of energy put into a system. If you add energy to a solid, it can become a liquid. Liquids have more energy and entropy than solids.
A chemical reaction that increases the number of gas molecules would be a reaction that pours energy into a system. This article is from the online course:. News categories. Other top stories on FutureLearn. Category: General.
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