Third law of thermodynamics

The third law of thermodynamics says:
If an object reaches the absolute zero of temperature (0 K = −273.15C = −459.67 °F), its atoms will stop moving.
The definition is: at absolute zero , the entropy of a perfectly crystalline substance is zero.

Experimentally, it is not possible to obtain −273.15°C, as of now. It is found that most of the gases either liquify or solidify before reaching such a temperature, gaseous molecules no longer remaining. So far, scientists have been able to get close to, but not exactly, absolute zero. This may change in the future.

Related pages
Zeroth law of thermodynamics
First law of thermodynamics
Second law of thermodynamics

Category:Thermodynamics
Category:Laws of physics