熱力学 · 学部

Complete Thermodynamics

A structured path through entropy, ensembles, and thermodynamic potentials.

公開 2026年4月26日 · 1 分

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Entropy

Entropy measures both thermodynamic irreversibility and statistical multiplicity:

S = k_B\ln W.

The partition function

Z=\sum_i e^{-\beta E_i}

contains equilibrium information in the canonical ensemble.

Different constraints call for different potentials, such as $F$ and $G$ .

可逆と不可逆を分ける物理量、エントロピー。マクロ・統計両側面から。

The thermodynamic potential suited to constant temperature and pressure.

The statistical object from which thermodynamic quantities are derived.