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Boltzmann constant: The Boltzmann constant, k, is one of seven fixed constants defining the International System of Units, the SI, with k = 1.380 649 x 10-23 J K-1. The Boltzmann constant is a proportionality constant between the quantities temperature (with unit kelvin) and energy (with unit joule).
Learn about Boltzmann constant, a physical constant that relates the average kinetic energy of gas particles and the temperature of the gas. Find out its value in different units, formula, applications and FAQs at BYJU'S.
- 23 min
Boltzmann constant (symbol k), a fundamental constant of physics occurring in nearly every statistical formulation of both classical and quantum physics. The constant provides a measure of the amount of energy (i.e., heat) corresponding to the random thermal motions of the particles making up a substance.
- The Editors of Encyclopaedia Britannica
Aug 19, 2021 · Learn what the Boltzmann constant (k) is and how it relates to the ideal gas law, entropy, and black-body radiation. Find out its value in different units and the difference between k and σ.
Apr 28, 2023 · Traditionally, however, this constant is given a different name; it is Boltzmann’s constant, usually given the symbol \(k\). \[k={R}/{\overline{N}}=1.381\times {10}^{-23}\ \mathrm{J}\ {\mathrm{K}}^{-1}\ {\mathrm{molecule}}^{-1} \nonumber \]
Learn about Ludwig Boltzmann's atomic theory and his constant's role in thermal physics. Explore the kinetic-molecular explanation of temperature, the ideal gas law, and the concept of entropy with examples and questions.
- 10 min
- David SantoPietro
Jan 30, 2023 · The Boltzmann constant ( k or kB) is the physical constant relating temperature to energy. It is named after the Austrian physicist Ludwig Eduard Boltzmann. Its experimentally determined value (in SI units, 2002 CODATA value) is: kB = 1.3806505(24) ×10−23JK−1 (1) (1) k B = 1.380 6505 ( 24) × 10 − 23 J K − 1.
