Wolfram Research
Wolfram Science World: Brownian Motion
This site from ScienceWorld gives a brief description of Brownian motion. It also goes on with a detailed series of formula derivations utilizing calculus. Links to related topics and definitions are given.
Nobel Media AB
The Nobel Prize: Jean Baptiste Perrin Biographical
The Nobel Foundation provides a biography of the scientist who won 1926 Nobel Prize Physics, Jean Baptiste Perrin.
Bibliomania
Bibliomania: Moliere the Physician in Spite of Himself
Here, read Moliere's three-act play, "The Physician in Spite of Himself."
Curated OER
Classic Chemistry: Jean Perrin
An excerpt of Perrin's paper "Brownian Motion and Molecular Reality". Includes references.