Negative tempertures discovered

[SoobieOut]

Just read a cool (pun intended) article about the discovery of negative tempertures, below absolute 0.

May change thermodynamics forever!

Atoms Reach Record Temperature, Colder than Absolute Zero | LiveScience

[HydroJim]

Very interesting read.

I fear it will only fuel the proponents of perpetual motion

[Piwoslaw]

First something that is faster than light, now this. What will be next??

[UFO]

I don't mind saying that negative temperatures make no sense to me at all. It's stranger than quantum mechanics.

[CigaR007]

Originally Posted by Piwoslaw

First something that is faster than light, now this. What will be next??

That was a calculation error.

[niky]

Strange, but makes sense, mathematically... Below zero, everything must reverse.

Doubt it would make a useful source of energy, considering the expense needed to heat matter to near-zero K, and the tiny amount of energy you can get out of a nano-Kelvin differential, but it's fascinating to think of dark matter as negative in this manner.