Timeline for What happens to entropy during compression?
Current License: CC BY-SA 4.0
14 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Sep 20 at 16:29 | comment | added | Bob D | In response to a condescending comment | |
| Sep 20 at 16:17 | comment | added | bananenheld | That's an unfriendly comment | |
| Sep 19 at 19:44 | comment | added | bananenheld | I don't think you understand the second law. Boltzmann already showed in 1877 that entropy is statistical in nature, which means that it theoretically could spontaneously decrease, it's just extremely unlikely. | |
| Sep 8 at 7:28 | comment | added | Bob D | @bananenheld and here chem.libretexts.org/Bookshelves/… | |
| Sep 8 at 7:23 | comment | added | Bob D | @bananenheld where the heck did you get that idea from. It is absolutely true. It is the second law. look it up anywhere. See section summary second bullet at the end of this link as one example courses.lumenlearning.com/suny-physics/chapter/…. | |
| Sep 8 at 6:48 | comment | added | bananenheld | Your statement "The total entropy change of the system plus the surroundings (the universe) can never decrease" is false | |
| Sep 7 at 11:13 | comment | added | Bob D | @bananenheld if you’re referring to total entropy (system + surroundings) I agree. But entropy of the system or surroundings alone can certainly decrease. | |
| Sep 7 at 10:35 | comment | added | bananenheld | The second law of thermodynamics is also statistical in nature, so the best way to describe it is to say that entropy is unimaginable extremely likely to never decrease regardless if the system is open or closed. | |
| Sep 4 at 17:06 | comment | added | Peter - Reinstate Monica | Ah yes, indeed. | |
| Sep 4 at 14:56 | comment | added | Bob D | @Peter-ReinstateMonica Interesting. I assume you meant “isolated” system instead of “closed” system | |
| Sep 4 at 11:45 | comment | added | Peter - Reinstate Monica | It is an important point that at the end of the day, because there are no closed systems, and sometimes intentionally open ones, only the overall entropy in the entire universe is bound to rise. Since the universe is infinite, that may be less of a constraint than the second law may seem to suggest: In principle, entropy can go "away" to where Hilbert lives, so to speak. For example, space stations etc. routinely dump entropy by radiating it "away". | |
| Sep 2 at 16:48 | vote | accept | Golden_Hawk | ||
| Sep 2 at 3:52 | history | edited | Bob D | CC BY-SA 4.0 |
added 36 characters in body
|
| Sep 2 at 3:34 | history | answered | Bob D | CC BY-SA 4.0 |