In statistical thermodynamics, the **Boltzmann formula** is an equation concerning the entropy S of a system derived from statistic or probability arguments:

where *k* is the Boltzmann constant (Gas constant R divided by Avogadro’s number N) and W is the multiplicity or number of ways of describing the system. The Boltzmann formula, in quantitative terms, expresses the concept that entropy is a measure of disorder of a system. [1] The Boltzmann formula, in its modern form, was first given by German physicist Max Planck in 1901 as part of his principle of elementary disorder. [2]

See also

● S = k ln W

References

1. Daintith, John. (2004). *Oxford Dictionary of Science. *Oxford University Press.

2. Planck, Max. (1901). "On the Law of Distribution of Energy in the Normal Spectrum". *Annalen der Physik*, vol. 4, p. 553 ff.

External links

● Boltzmann’s entropy formula – Wikipedia.