Boltzmann constant

physical constant relating energy at the individual particle level with temperature
(Redirected from Gas constant)
For the constant pertaining to energy of black body radiation see Stefan–Boltzmann constant
Values of k Units
1.380649×10−23 JK−1
8.617333262×10−5 eV K−1
1.380649×10−16 erg K−1

The Boltzmann constant (k or kB) is a physical constant. It is defined to be 1.380649×10−23 J/K.[1] It relates the average kinetic energy of a particle in a gas with the temperature of the gas. It is the gas constant R divided by the Avogadro constant NA:

The Boltzmann constant has SI units of J⋅K−1 (also written J/K), the same as entropy. It is named after the Austrian physicist Ludwig Boltzmann.

References change

  1. SI Brochure: The International System of Units (SI) (PDF) (Ninth ed.), Bureau International des Poids et Mesures, 2019, p. 129, retrieved 2020-01-18