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 a measure of the average jiggling speed of the atoms or particles.

The important point is *it’s a speed*. You can’t go slower than stopped. “Not moving” is the slowest possible speed. That’s why there’s a minimum temperature. That’s why we call 0 Kelvin “absolute zero”, because that’s the temp corresponding to a particle speed of 0.

There’s no max* because things can always go faster.

*The speed of light is a max speed for things but that’s so fast it’s not really relevant to this question. Google planck temperature if you want info on this.