波兹曼熵公式 Boltzmann's entropy formula
（重定向自Entropy equation）
波兹曼熵公式是统计力学的重要公式，是热力学机率 W与代表系统乱度的熵之间的关系，公式为；
![S = k_\mathrm{B} \ln W \!](/Images/godic/202501/11/ecda8bab6b774183107eb6e69fd31e2c5630.png")
其中kB是波兹曼常数(也可写成k)，大小为1.38065 × 10 J/K
Entropy equation
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Boltzmann's entropy formula 波兹曼熵公式
（重定向自Entropy equation）
![Boltzmann's grave in the Zentralfriedhof, Vienna, with bust and entropy formula.](/Images/godic/202501/11/Zentralfriedhof_Vienna_-_Boltzmann5630.JPG")
In statistical mechanics, Boltzmann's equation is a probability equation relating the entropy S of an ideal gas to the quantity W, which is the number of microstates corresponding to a given macrostate:
where kB is the Boltzmann constant (also written with k), which is equal to 1.38065 × 10 J/K.
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