Boltzmann constant

{
  "id": "MLC-T-CHM-001408",
  "term": "Boltzmann constant",
  "field": "Chemistry",
  "definition": "A fundamental physical constant that relates the average kinetic energy of particles in a gas to the absolute temperature of the gas. It is a proportionality factor in the Boltzmann entropy formula and the ideal gas law. The Boltzmann constant, denoted as k or k_B, has a defined value of 1.380 649 × 10^-23 joules per kelvin (J/K).",
  "subject": "Chemistry and Human Health",
  "references": [
    "BIPM, The International System of Units, SI Brochure, 9th ed. (2019), p. 127 (https://www.bipm.org/en/publications/si-brochure/)",
    "Newell et al., Metrologia 55, L13-L16 (2018) (https://doi.org/10.1088/1681-7575/aa950a)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/boltzmann-constant/"
}