Brownian motion


Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.

Brown·i·an motion

 (brou′nē-ən)
n.
The random movement of microscopic particles suspended in a liquid or gas, caused by collisions with molecules of the surrounding medium. Also called Brownian movement.

[After Robert Brown.]

Brown′i•an mo′tion

(ˈbraʊ ni ən)
n.
the random motion of small colloidal particles suspended in a liquid or gas medium, caused by the collision of the medium's molecules with the particles. Also called Brown′ian move′ment.
[1870–75; after Robert Brown (1773–1858), Scottish botanist, who described it in 1827]

Brown·i·an 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.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.Brownian motion - the random motion of small particles suspended in a gas or liquidBrownian motion - the random motion of small particles suspended in a gas or liquid
motion, movement - a natural event that involves a change in the position or location of something
References in periodicals archive ?
The principle that underpins it is a relatively simple one--small particles in a dispersion or solution are subject to Brownian motion, which is driven by collisions with the solvent molecules.
ci] for each country i is much larger than that of the Brownian motion volatility [[sigma].
That the known characteristics of the 3-space flow agree with results from the anisotropy of the Brownian motion data suggests a simple mechanism, namely that the 3-space flow generates an energy shift in the water molecules; E [right arrow] E + [?
To address this problem, a first passage time model operating under an assumption that changes in jet fuel prices follow geometric Brownian motion is proposed.
Most importantly, he took the absolute Brownian motion that admits of negative price with high probabilities into geometric Brownian dynamics for meaningful economic model whereby Bachelier's structure:
A combination of dark field imaging and photography or other image archiving can be used to compare properties on aging such as Brownian motion, particle size, and dispersion quality and to follow the development of flocculation and phase separation.
Children wandered among the homes, forming random groupings in a kind of Brownian motion, playing, talking and making a companionable racket.
The richness of this question is apparent from the one-dimensional case of Dyson Brownian motion.
We assume the stock prices follow the Geometric Brownian Motion model with varying coefficients, and statistics shows that stock price data fit well with the model.
The Brownian motion is important because it gives the motion with characteristics of the Markov process.
DWI technique is sensitive to random water movements in spatial scales defined as Brownian motion and any lesion with restriction in the Brownian motion of the water molecules is seen as hyperintense signal on DWI.
The author uses a geometric Brownian motion model of the stock price to estimate the distribution of stock prices over the U.