Brownian movement
[ brou-nee-uh n ]
/ ˈbraʊ ni ən /
noun Physics.
the irregular motion of small particles suspended in a liquid or a gas, caused by the bombardment of the particles by molecules of the medium: first observed by Robert Brown in 1827.
Also called
Brownian motion.
Origin of Brownian movement
1870–75;
Brown +
-ian
British Dictionary definitions for brownian motion
Brownian movement
/ (ˈbraʊnɪən) /
noun
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 Origin for Brownian movement
C19: named after Robert
Brown
Medical definitions for brownian motion
Brownian movement
[ brŏu′nē-ən ]
n.
The random movement of microscopic particles suspended in a liquid or gas, caused by collisions with molecules of the surrounding medium.
Brownian motion molecular movement pedesis
Scientific definitions for brownian motion
Brownian motion
[ brou′nē-ən ]
The random movement of microscopic particles suspended in a liquid or gas, caused by collisions between these particles and the molecules of the liquid or gas. This movement is named for its identifier, Scottish botanist Robert Brown (1773-1858). See also kinetic theory.
Cultural definitions for brownian motion
Brownian motion
The erratic motion, visible through a microscope, of small grains suspended in a fluid. The motion results from collisions between the grains and atoms or molecules in the fluid.
notes for Brownian motion
Brownian motion was first explained by the twentieth-century physicist Albert
Einstein, who considered it direct proof of the existence of atoms.