Boltzmann Entropy

Thermodynamics · 1877

Equation: S = k·log W
Field: Thermodynamics
Named After: Ludwig Boltzmann
Symbols: S entropy · k Boltzmann constant · W number of microscopic arrangements
Year: 1877

Significance

Entropy counts the ways. The bridge between the microscopic world of atoms and the macroscopic arrow of time — carved on Boltzmann's gravestone.

constant

element

equation

event

theory

Open on the Equations shelf — the interactive card, the filters, and everything alongside it.

From the Equations database in Notion, last edited 2026-08-15. This page is the row, rendered by the build; nothing on it is written by hand.