Timeline for Is there a clear analogy here between volume and entropy? Looking at: $ \frac{dQ}{T} = dS, \frac{dW}{P} = dV$
Current License: CC BY-SA 4.0
6 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| May 8, 2022 at 21:02 | comment | added | bananenheld | Thank you for your answer @chemomechanics. So just like a pressure differential 'pushes out' a volume $\Delta V$, a temperature differential 'pushes out' an entropy $\Delta S$. In a certain sense the differentials create a new 'space' for the particles to move. Where as pressure literal space, and temperature new 'energy' states to reach. An irreversible path creates entropy but doesn't create volume is the biggest difference if I understand correctly | |
| May 8, 2022 at 20:57 | vote | accept | bananenheld | ||
| May 1, 2022 at 21:16 | comment | added | Chemomechanics | Good point; edited to make the context clear. | |
| May 1, 2022 at 21:15 | history | edited | Chemomechanics | CC BY-SA 4.0 |
added 37 characters in body
|
| May 1, 2022 at 20:56 | comment | added | Kregnach | Can I disagree with your last sentence? In classical thermodynamics of gases and regular stuff maybe it's true, but in case of cosmology, especially inflationary models it doesn't hold. If you don't work in flat spacetime that dV becomes really interesting. Fluctuating spacetime generates dV, as fluctuating quantum fields can create particles or entropy. But Its just a comment to your last sentence, your writing is up voted! :) | |
| May 1, 2022 at 16:17 | history | answered | Chemomechanics | CC BY-SA 4.0 |