![]() ![]() ![]() Entropy is an extensive property, but it is often given as an intensive property of specific entropy as entropy per unit mass or entropy per mole. Entropy was discovered when it was noticed to be a quantity that behaves as a function of state. In thermodynamics, entropy has been found to be more generally useful and it has several other formulations. The above definition is sometimes called the macroscopic definition of entropy because it can be used without regard to any microscopic picture of the contents of a system. Where the entropy is found from the uniform thermodynamic temperature of a closed system divided into an incremental reversible transfer of heat into that system. Entropy was originally defined for a thermodynamically reversible process as The entropy of an isolated system never decreases, because isolated systems spontaneously evolve towards thermodynamic equilibrium, which is the state of maximum entropy.Įntropy is a thermodynamic quantity that helps to account for the flow of energy through a thermodynamic process. ![]() Freebase (3.67 / 3 votes) Rate this definition:Įntropy is a measure of the number of specific ways in which a system may be arranged, often taken to be a measure of disorder. ![]()
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