Physlib

Physlib.StatisticalMechanics.BoltzmannConstant

Boltzmann constant

The Boltzmann constant is a constant `kB` of dimension `m² kg s⁻² K⁻¹`, that is `Energy/Temperature`. It is named after Ludwig Boltzmann.

In this module give the value of the Boltzmann constant.

5 declarations

definition

Boltzmann constant kBk_B

The Boltzmann constant kBk_B is defined as the positive real number 1.380649×10231.380649 \times 10^{-23} with units of m2kgs2K1\text{m}^2 \, \text{kg} \, \text{s}^{-2} \, \text{K}^{-1} (equivalent to JK1\text{J} \cdot \text{K}^{-1}). It is represented as an element of the subtype of positive real numbers {pRp>0}\{p \in \mathbb{R} \mid p > 0\}. While the value is specified in SI units, this constant serves as the Boltzmann constant in any arbitrary set of units as long as the underlying numerical value is not explicitly invoked.

definition

Boltzmann constant kBk_B

The Boltzmann constant kBk_B is a real number representing the physical constant that relates the average relative kinetic energy of particles in a gas with the thermodynamic temperature. It has the physical dimension of Energy/Temperature\text{Energy}/\text{Temperature} and is numerically equal to 1.380649×10231.380649 \times 10^{-23} in SI units (m2kgs2K1\text{m}^2 \, \text{kg} \, \text{s}^{-2} \, \text{K}^{-1}).

theorem

kB>0k_B > 0

The Boltzmann constant kBk_B is strictly positive, satisfying the inequality 0<kB0 < k_B.

theorem

kB0k_B \ge 0

The Boltzmann constant kBk_B is non-negative, satisfying the inequality 0kB0 \le k_B.

theorem

kB0k_B \neq 0

The Boltzmann constant kBk_B is not equal to zero (kB0k_B \neq 0).