[Leaning Right]

> If it is zero degrees and it gets twice as cold… <

My understanding is that at absolute zero it cannot get any colder. Therefore, at that temperature getting twice as cold (or any amount colder) would not be possible.

Atoms and molecules are always in motion, although normally we don’t notice it. The lower the temperature, the less motion there is. At absolute zero theoretically all motion has stopped.

Since motion can no longer decrease, no further drop in temperature is possible.

🥶

[C210N]

So, at absolute zero, are electrons stationary in their nucleus orbiting?

[ScottHammett]

Does that apply to photons or gravity or time or do those transcend thermodynamics? Inquiring minds want to know.

[grey_whiskers]

Atoms and molecules are always in motion, although normally we don’t notice it. The lower the temperature, the less motion there is. At absolute zero theoretically all motion has stopped.

For polyatomic molecules, the laws of quantum mechanics (specifically the uncertainty principle) says you cannot simultaneously know both the position and momentum with arbitrary position; hence, molecules continue to vibrate (hence the name "zero point energy").