How does negative absolute temperature work?

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Of course you can’t reach absolute zero, but theoretically you could go below it, and reach a form of temperature that works opposite to how our temperature works in terms of energy, but… what would it look like? I’m having a little trouble visualizing it. Would my hand heat up or cool down, and would it the negative value just keep rising?

In: Physics

6 Answers

Anonymous 0 Comments

It’s actually hotter than anything

https://www.sciencedaily.com/releases/2013/01/130104143516.htm

> These negative absolute temperatures have several apparently absurd consequences: although the atoms in the gas attract each other and give rise to a negative pressure, the gas does not collapse – a behaviour that is also postulated for dark energy in cosmology.

This was from 2013 so there may be more on the topic today.

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