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random motion

Printed dictionaries and other books with definitions for random motion

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Google previewEncyclopedia of Theoretical Ecology (2012)

by Dr. Alan Hastings, Dr. Louis Gross

In analyzing the availability of phosphate to phytoplankton, for example, we might be concerned with molecular diffusion, the random motion of the phosphate ions as they are buffeted by molecules of water. The water may be flowing smoothly ( so-called laminar flow), and the phosphate is then also carried along by the current, a process known as advection; alternatively, the water may be turbulent, flowing in an irregular and stochastic fashion with eddies at many length scales, so that ...

Google previewDictionary of Physics (2014)

by Michael Chapple

random motion is the motion of an atom in a fluid whose velocity changes randomly in both magnitude and direction as a consequence of repeated collisions. The distance traveled between collisions is also random. A change is random if the new value cannot be determined from previous values. (Compare with Brownian motion.l randomness and radioactive decay are ...

Google previewThe Sterling Dictionary Of Chemistry (1999)

by Anand Dhingra

The gas molecules are considered rigid, solid, spherical point particles which are always in regular random motion. (b) Gas molecules collide with one another, as well as with the walls of the vessel. (c) Collisions on the walls are responsibile for pressure. (d) Actual volume of the gas molecules is negligibly small as compared to total volume occupied by the gas. (e) Collisions are perfectly elastic, so no energy is lost during collisions.

Google previewConcise Dictionary Of Physics (2012)

by V&S Publishers' Editorial Board

Brownian motion The continuous random motion of solid microscopic particles when suspended in a fluid medium due to the consequence of ongoing bombardment by atoms and molecules. Brownian movement The irregular ...

Google previewDictionary of Phhysics

The colecules are also having almost free random motion. A plasma is sometimes considered to be a fourth state of matter. Static electricity. (1) See electrostatics. ( 2) Electricity characteristic of charges that are the rest, as opposed to current electricity ...

Google previewCRC Concise Encyclopedia of Nanotechnology (2016)

by Boris Ildusovich Kharisov, Oxana Vasilievna Kharissova, Ubaldo Ortiz-Mendez

Re2Pr2 and δ ~ 3dp are the heat transfer coefficient for nanofluids and thermal boundary layer thickness, respectively Pr is the Prandtl number Redp is the Reynolds number C is the constant CRM is the random motion velocity of nanoparticles ν is the dynamic viscosity of base fluid The model advantage ...

Google previewIllustrated Dictionary and Resource Directory of Environmental and Occupational Health, Second Edition (2016)

by Herman Koren

random motion — The molecular movement that is always present but nondirectional. random noise — Oscillation whose instantaneous magnitude cannot be specified for a given point in time. random sampling — (air) A process in which grab or integrated samples are collected at random intervals; (statistics) ...

Google previewDictionary of Chemistry (2014)

by Andrew Hunt

Brownian motion is the rapid random motion of minute particles suspended in a liquid or gas. The phenomenon was first seen by the British ...

Google previewHistorical Encyclopedia of Natural and Mathematical Sciences (2009)

by Ari Ben-Menahem

If a uniform external electric field E is applied, the electrons are accelerated; superimposed on the rapid random motion, ...

Google previewEncyclopedia of Physics (2009)

by Joe Rosen

heat Also called thermal energy, heat is the internal energy of matter, the ENERGY of the random motion of matter's microscopic constituents (its ATOMs, MOLECULEs, and IONs). In a GAS, the molecules or atoms are confined only by the walls of the container.

Google previewInternational Encyclopedia of Systems and Cybernetics (2004)

by Charles François

The random motion at microscopic level of particles suspended in a liquid or a gas. As stated by P. DAVIES: "Brownian motion is the archetypical, random unpredictable process. Yet, so the argument ran, it we could follow in detail the activities of all the individual molecules involved, Brownian motion would be every bit as predictable and deterministic as clockwork. The apparent random motion of the Brownian particle is attributed solely to the lack of ...

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