Brownian motion

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Brown·i·an motion

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)
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

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 ?
Section 3 presents the theoretical analysis about the distribution of nodes which encountered the destination recently based on Brownian motion. Section 4 describes the implementation of the DBB-AODV.
The dimensionless parameters Nb (Brownian motion parameter) and Nt (thermophoresis parameter) are defined as
The thermal conductivity related to Brownian motion [12], [], and thermal conductivity of base fluids, [k.sub.f], may be combined as one input variable to the physical-statistical model.
The dependency of the local skin friction coefficient and the local Nusselt number on several parameters, namely, the stretching/shrinking, Brownian motion, and thermophoresis parameters is the main focus of the present investigation.
He combines many of those applications into a single volume, including Brownian motion, diffusion processes, and Levy flights.
A feisty cut and nifty sweep off Shane Shillingford set off Brownian motion in the stands, and when a perfect off-drive off Tino Best took him to the 68th half-century of his career, the stand that bears Tendulkar's name became an impromptu mosh pit.
The topic of Star Trek Kirk/Spock slash (homoerotic) fan fiction had been explored in an earlier essay, "Brownian Motion: Women, Tactics, and Technology" (in Technoculture, edited by Penley and Andrew Ross, 1991), and in part of her book, NASA/TREK, but its appearance in the edited volume Cultural Studies drew much positive attention, marked the topic of women writing male-male erotica as falling under the rubric of cultural studies and did much to legitimize and mainstream fan studies.
As a result, in order to fully understand the mechanisms that govern the enhancement of these nanofluids and optimize the thermophysical properties, the mixing effect of the base fluid in the immediate vicinity of the nanoparticles caused by the Brownian motion of the nanoparticles was analyzed, modeled, and compared with existing experimental data available in the literature.
The studied model incorporates the effects of suction injection parameter [alpha], Lewis number Le, the Brownian motion parameter [N.sub.b], and thermophoresis parameter [N.sub.t].
The jostling molecules of liquid bump the particles to and fro in an effect called Brownian motion.
In this article, we propose a stochastic model, based on the Brownian motion process, plus an asymmetric jump diffusion process for the estimation and forecasting of mortality rates and life expectancy.
(2001), who solved the problem to stop a Brownian motion so as to minimize the square error deviation from the maximum.