triffid_hunter t1_j2810g5 wrote
Reply to comment by The-Temple-Of-Iron in What is our current "best guess" about how to observers that entered a black hole on opposite sides would look to each other once they crossed the event horizon? by WittyUnwittingly
> Temperature is a measurement of vibrations in particles essentially.
That's the entry-level understanding of it in matter, but the scientists have come up with new better understandings based on entropy - which is how we end up with negative temperatures that are hotter than any positive temperature, and exist in lasers.
> Mathematically time stops in a singularity. If that is so then, in my incredibly layman-style interpretation, Temperature is physically the same as absolute 0 K.
Nope - particles' momentum is related to temperature, and they keep their momentum if you stop time - they can't move anywhere because no time is passing, but their velocity is still non-zero.
This is quite distinct from particles inhabiting the lowest possible energy state (ie being at absolute zero) where they don't move (or do weird stuff) even though time is passing
The-Temple-Of-Iron t1_j2816ac wrote
Thank you! That is really interesting and I'm definitely about to go down a rabbit hole on this. I appreciate that!
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