Brownian movement

/ ˈbraʊnɪən /

noun

1. random movement of microscopic particles suspended in a fluid, caused by bombardment of the particles by molecules of the fluid. First observed in 1827, it provided strong evidence in support of the kinetic theory of molecules

Word History and Origins

Origin of Brownian movement¹

C19: named after Robert Brown

Example Sentences

He has made other valuable contributions to Theoretical Physics, among these being a theory of the Brownian movements and various important applications of the modern quantum theory of energy.

From Project Gutenberg

Brownian movements have already yielded up their dances to the motion picture camera.

From Project Gutenberg

Note the locomotive activity of M. agilis and the Brownian movement of the remaining micrococci.

From Project Gutenberg

Many bacteria when suspended in a fluid exhibit a power of independent movement which is, of course, quite distinct from the Brownian movement—a non-vital phenomenon common to all finely-divided particles suspended in a fluid.

From Project Gutenberg

This incessant movement in the world of molecules is called the Brownian movement, and is a striking proof of the reality of molecular motions.

From Project Gutenberg