Absolute Zero

Boltzmann Equation for Entropy:

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MafruhaR
Posts: 51
Joined: Wed Nov 22, 2023 8:31 am

Absolute Zero

Postby MafruhaR » Sun Mar 17, 2024 11:51 pm

Can someone please explain why the entropy of a perfect crystal at absolute zero temperature is zero according to the Third Law of Thermodynamics.
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905960080
Posts: 50
Joined: Tue Nov 14, 2023 9:05 am

Re: Absolute Zero

Postby 905960080 » Sun Mar 17, 2024 11:57 pm

Entropy is high when molecules move around quickly, change positions, vibrate, or spin. However in a perfectly crystallized structure, the molecules have no movement, not even spinning, so they are forced to stay completely still which is the least amount of disorder that you could have.
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