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Temperatures
(lemmy.ml)
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this post was submitted on 16 Oct 2024
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21k and 69k are so cold that time would dialate significantly at those temps
This has me confused.
Temperature can be used to refer to how fast the atoms are jiggling (kinetic or phonon temperature) or to how messy, disordered (opposite of ordered) a system is.
Time dilation is a relativistic effect where time appears to go slower when you are looking at something that has a very high speed (near light speed) compared to you (relative velocity). Can also happen with mass because gravity is acceleration, thus related to velocity.
If the atoms are jiggling slower, relative velocities only shrink, so you'd expect to see less relativistic effect. I am not aware of any relativistic effects due to thermal motion in normal conditions (room temp, atmospheric pressure), so I don't know how they'd appear when relative velocities only decrease.
I am really interested where you got this temperature - time dilation link from. Can't seem to crack it.
Yeah their comment doesn't seem right to me. After a bit of googling I found this answer talking about heating things up to see relativistic effects, however because the velocities of the atoms in an object that has been heated up are random it's most likely not possible to detect any relativistic effects. https://physics.stackexchange.com/questions/351773/is-there-a-relation-between-fluctuations-temperature-and-time-dilation