# 波茲曼常數

（重定向自波尔兹曼常数

1.38064852(79)×10−23 J|K−1
8.6173303(50)×10-5 eV|K−1
1.38064852(79)×10−16 erg|K−1

${\displaystyle k=1.38064852(79)\times 10^{-23}}$J/K

${\displaystyle k={\frac {R}{N_{\text{A}}}}\,}$

## 溫度與能量關係

${\displaystyle {\frac {kT}{2}}=2.07\times 10^{-21}}$J或 0.013 eV。

${\displaystyle PV=NkT}$

## 熵的定義

${\displaystyle S=k\,\ln \Omega }$

## 熱電壓

${\displaystyle V_{T}={kT \over q},}$ 其中${\displaystyle q}$ 為电子的电量（大小为1.602×10−19, 單位是庫侖）。

## 参考文献

1. ^ P.J. Mohr, B.N. Taylor, and D.B. Newell (2011), "The 2010 CODATA Recommended Values of the Fundamental Physical Constants" (Web Version 6.0). This database was developed by J. Baker, M. Douma, and S. Kotochigova. Available: http://physics.nist.gov/constants [Thursday, 02-Jun-2011 21:00:12 EDT]. National Institute of Standards and Technology, Gaithersburg, MD 20899.
2. ^ 溫度的單位：克耳文(K). 國家度量衡標準實驗室. [2015-10-16].
3. ^ Ghosh, Pallab. Kilogram gets a new definition. BBC News. 2018-11-16 [2018-11-16] （英国英语）.
4. ^ Veritasium, The kg is dead, long live the kg, 2018-11-15 [2018-11-16]