[BrandtMichaels]

Zeroth law of thermodynamics aka the law of zero entropy.

The zeroth law was the last one defined and was an obvious afterthought, has to do with reaching a theoretical absolute zero ~ never to be attained ~ and thus in the same realm as the Heisenberg uncertainty principle.

Yet there’s not any one website that defines it completely and correctly ~ nor one that won’t mess up my formatting.

[grey_whiskers]

I always heard of it as the Third Law.

One wag paraphrased the laws of thermo as:

1) You can't win

2) You can't even break even

3) You can't get out of the game (cannot reach absolute zero in a finite number of steps)

Must be a generational thing.

Cheers!