View source for Third law of thermodynamics

{{Term
|Display title=third law of thermodynamics
|Definitions={{Definition
|Num=1
|Meaning=The statement that every substance has a finite positive [[entropy]],  and the entropy of a crystalline substance is zero at the [[temperature]] of [[absolute zero]].
|Explanation=Modern [[quantum theory]] has shown that the entropy of crystals at 0 K is not necessarily zero.  If the [[crystal]] has any asymmetry, it may exist in more than one state; and there is, in addition,  an entropy residue deriving from nuclear spin. <br/>''See'' [[thermodynamic probability]].
}}
}}