# Difference between revisions of "Brownian Motion"

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## Revision as of 19:26, 11 September 2012

## Definition

Brownian motion was identified by Robert Brown in 1827 after looking at the jittery movement of pollen on water. It can be defined as the apparent random motion of particles suspended on a fluid. The term is often associated with the 'random walk' phenomenon.

## Applications

Brownian motion, and the mathematical models that describe it, have been used for over a century to describe a multitude of phenomena. For example, Einstein used Brownian motion to describe both the existence of atoms, and the kinetic model of thermal equilibrium. Among other things, economists have been using Brownian motion since the early 20th century to model the stock market. For a study of the diffusion of brownian spheres, see Hydrodynamic Coupling of two brownian spheres to a planar survace.

## References

## Links

http://galileoandeinstein.physics.virginia.edu/more_stuff/Applets/brownian/brownian.html

## Papers

1. Einstein, A. "On the Movement of Small Particles Suspended in Stationary Liquids Required by the Molecular-Kinetic Theory of Heat", *Annalen der Physik*, 17, 1905, 549-560

## Keyword in references:

Brownian Dynamics of a Sphere Between Parallel Walls

Single-particle Brownian dynamics for characterizing the rheology of fluid Langmuir monolayers

The Elementary Theory of the Brownian Motion

Like Charge Attraction through Hydrodynamic Interaction

Noise underlies switching behavior of the bacterial flagellum

The force-velocity relationship for the actin-based motility of Listeria-Monocytogenes

Gravitational stability of suspensions of attractive colloidal particles

Physiological and pathological population dynamics of circulating human red blood cells

Motility driven by macromolecular springs and ratchets

Single molecule statistics and the polynucleotide unzipping transition