Comment on Temperatures
nondescripthandle@lemmy.dbzer0.com 2 months agoI was taught that any energy exerts stress on space-time and because of that removing energy, lowering temperture, causes dialations.
Comment on Temperatures
nondescripthandle@lemmy.dbzer0.com 2 months agoI was taught that any energy exerts stress on space-time and because of that removing energy, lowering temperture, causes dialations.
troyunrau@lemmy.ca 2 months ago
Where were you taught this? It’s pretty much incorrect.
It is true that particles at higher temperatures have higher kinetic energies. But their velocities are so far away from light speed (usually) that relativistic effects like time dilation are entirely irrelevant.
For reference, the surface of Pluto is about 40K. Some of the other dwarf planets a little further out are in the 21K range. Liquid hydrogen (used in many rockets) is 20K.
69K is slightly warmed than liquid nitrogen (63K), and that is incredibly commonly used all over the world. And warmer than Pluto ;)
nondescripthandle@lemmy.dbzer0.com 2 months ago
College physics course near two decades ago now, only about a quarter semester on reletivity though, it was mostly an extension of the first years physics courses.
troyunrau@lemmy.ca 2 months ago
It’d be interesting to try to figure out if you were taught wrong, or remember wrong. Memories tend to drift over time, but it’s possible your college did you a disservice and taught you wrong… Not important. Nevertheless, I hope you’re having a great day someplace that is either 21, 69, or 295 ;)
nondescripthandle@lemmy.dbzer0.com 2 months ago
A lot of people definitely taught me wrong, I am American after all. But point taken I was taught the fickleness of memory elsewhere so Im with you there. Could be a bit of both too where I may have heard sometime right and infered something wrong from it. All I remember is heeding my Phys major buddies advice to not stick around for the double pendulum equations.