Dresden, Max Formerly, Institute for Theoretical Physics, State University of New York, Stony Brook, New York.
Last reviewed:October 2019
- Mirror in a gas
- Langevin equation
- Related Primary Literature
- Additional Reading
The irregular motion of a body arising from the thermal motion of the molecules of the material in which the body is immersed. Such a body will of course suffer many collisions with the molecules, which will impart energy and momentum to it. Because, however, there will be fluctuations in the magnitude and direction of the average momentum transferred, the motion of the body will appear irregular and erratic, as shown in the illustration.
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