Brownian Motion
Small particles suspended in liquid move spontaneously in a random fashion. The motion is caused by unbalanced impacts of molecules on the particle. Brownian motion provided strong circumstantial evidence for the existence of molecules.
- Historical Notes
- 1827 Brown discovered Brownian motion.
- 1905 Einstein published papers on Brownian motion, the photoelectric effect, and the special theory of relativity.
See also: Brown, Robert.
Subjects: Physics