Timeline for Explain the second principle of thermodynamics without the notion of entropy
Current License: CC BY-SA 4.0
7 events
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| Sep 18, 2022 at 22:29 | comment | added | Chiral Anomaly | @AndrewSteane That's a good point. In a system governed by reversible microscopic laws, we can tune the initial conditions so that the system ends up in any special state we want. Still, if we view probability in the Bayesian sense as advocated by Jaynes, then we can think about the second law something like this: if we don't know that the initial conditions are tuned in any special way, then the safest bet is that the molecules will end up distributed throughout the whole available space. I admit that's not quite what I said in my answer, though, so I'm glad you highlighted the issue. | |
| Sep 14, 2022 at 7:43 | comment | added | Andrew Steane | ... the point being that molecules are not like coins jiggling independently. If, after an increase of entropy, we reverse the velocities then after that the entropy will decrease. The physical state at the reversal of velocities cannot be ruled out a priori. | |
| Sep 14, 2022 at 7:38 | comment | added | Andrew Steane | What about correlations in the initial state? I mean Loschmidt's paradox and the like. Surely this issue is central and may not be simply omitted or ignored. | |
| Nov 9, 2018 at 13:20 | comment | added | Nicolas | Man, that's probably the best answer to this question there's going to be, ever. | |
| Nov 8, 2018 at 18:18 | vote | accept | Dimitris | ||
| Nov 8, 2018 at 16:52 | history | edited | Chiral Anomaly | CC BY-SA 4.0 |
Worded more carefully
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| Nov 8, 2018 at 15:48 | history | answered | Chiral Anomaly | CC BY-SA 4.0 |