logoalt Hacker News

kgwgk06/16/20251 replyview on HN

> Per my understanding

What’s the source of that understanding? You cannot measure the entropy, only changes of entropy - which will be the same (for an ideal gas).

Edit: we already had this discussion, by the way: https://news.ycombinator.com/item?id=42434862


Replies

tsimionescu06/16/2025

> You cannot measure the entropy, only changes of entropy

You can measure the changes in entropy from a minimal state and integrate - and you'll get the "total" entropy.

And thanks for looking it up! I remembered a very similar conversation and was wondering if you were the same person, but was a bit lazy to search :)

show 1 reply