grindy

That I do understand.
I study mechanical engineering, and we have lots of thermodynamics, physics and even dabbled in quantum physics a little, for good measure.
But I absolutely don't understand how they achieved it and how a temperature can be below absolute zero. Obviously the exact science behind it is way too complicated, but I thought someone might get all this talk about the reversal of the amount of higher to lower energy particles and all that.

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