# Difference between revisions of "Boltzmann constant"

The Boltzmann constant k (also kB) is the ratio of the molar gas constant R to Avogadro's constant NA. It can be thought of as the gas constant for a single molecule (or even for an arbitrary particle in a colloidal solution) rather than for a mole[1].

The Boltzmann Constant is illustrated here in the equation for the translational kinetic energy of a simple particle in thermal equilibrium with its surroundings:[2]



Where KEavg is the average kinetic energy of the particle, k is the Boltzmann Constant, and T is the temperature in kelvin.