Why is there a small lower limit to temperaure (-273.15C) but almost limitless upperbound? (million of degree in a star for example)

Question

Is there even an upper limit to temperature?

In: Physics

Answer 1

Temperature is effectively velocity. It’s how fast particles are vibrating.

Absolute zero is just everything being absolutely stationary.

Maximum temperature is more complicated. Obviously there is a maximum speed (light speed), but temperature is more a measure of energy, so it gets relativistic. Once you get to about 1,400,000,000,000,000,000,000,000,000,000,000 Celsius physics starts to break. But you’ll get a black hole long before that.