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Boltzmann constant : ウィキペディア英語版
Boltzmann constant

The Boltzmann constant (''k''B or ''k''), named after Ludwig Boltzmann, is a physical constant relating energy at the individual particle level with temperature. It is the gas constant ''R'' divided by the Avogadro constant ''N''A:
: k = \frac{N_\text{A}}.\,
The Boltzmann constant has the dimension energy divided by temperature, the same as entropy. The accepted value in SI units is .
==Bridge from macroscopic to microscopic physics==
Boltzmann's constant, ''k'', is a bridge between macroscopic and microscopic physics. Macroscopically, the moles) and absolute temperature ''T'':
:pV = nRT \,
where ''R'' is the gas constant (val
f particles in one mole (Avogadro's number).

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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