BROWNIAN MOVEMENT

zigzag, irregular motion exhibited by minute particles of matter when suspended in a fluid. The effect has been observed in all types of colloidal suspensions (see colloid)—solid-in-liquid, liquid-in-liquid, gas-in-liquid, solid-in-gas, and liquid-in-gas. It is named for the botanist Robert Brown who observed (1827) the movement of plant spores floating in water. The effect, being independent of all external factors, is ascribed to the thermal motion of the molecules of the fluid. These molecules are in constant irregular motion with a velocity proportional to the square root of the temperature. Small particles of matter suspended in the fluid are buffeted about by the molecules of the fluid. Brownian motion is observed for particles about 0.001 mm in diameter; these are small enough to share in the thermal motion, yet large enough to be seen with a microscope or ultramicroscope. The first satisfactory theoretical treatment of Brownian motion was made by Albert Einstein in 1905. Jean Perrin made a quantitative experimental study of the dependence of Brownian motion on temperature and particle size that provided verification for Einstein's mathematical formulation. Perrin's work is regarded as one of the most direct verifications of the kinetic-molecular theory of gases.

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The Columbia Encyclopedia, Sixth Edition Copyright© 2004, Columbia University Press. Licensed from Lernout & Hauspie Speech Products N.V. All rights reserved.

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Questia Books and Articles on: Brownian Movement
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books on: Brownian Movement  - 271 results

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1.
The New Age: Notes of a Fringe Watcher
Book by Martin Gardner; Prometheus Books, 1991
Subjects: Impostors And Imposture--Miscellanea, New Age Movement--Controversial Literature, Occultism--Controversial Literature, Parapsychology--Controversial Literature, Science--Miscellanea
...examples of pseudo-perpetual motion because they require outside energy. The earths rotation and revolution, the Brownian movements of particles in liquid suspension, the motions of molecules in a gas, of electrons in an atom, of electrical...
2.
The Logic of Modern Science
Book by J. R. Kantor; Principia Press, 1971
Subjects: Science--Philosophy
...The Theory of Brownian Motion The peculiarly agitated movements of such molecules...observed that the movement persisted unchanged...proposed that Brownian movement may be accounted...suggested that Brownian movements originated in...
3.
A History of Biology to about the Year 1900: A General Introduction to the Study of Living Things
Book by Charles Singer; Abelard-Schuman, 1959
Subjects: Biology--History
...the twentieth century, Brownian movements have been shown to be related to molecular movement in liquids. Brownian movements are visible under suitable conditions...On the death of protoplasm the Brownian movements cease. This is because...
4.
General Cytology: A Textbook of Cellular Structure and Function for Students of Biology and Medicine
Book by Robert Chambers, Warren H. Lewis, Edwin G. Conklin, Frank R. Lillie, Merle H. Jacobs, Clarence E. McClung, Ernest E. Just, Albert P. Mathews, Margaret R. Lewis, Thomas H. Morgan, Edmund B. Wilson, Edmund V. Cowdry, Ralph S. Lillie; University of Chicago Press, 1924
Subjects: Cells
...dissection method and by observing Brownian movement in the dark field do not agree with this. In 2 per cent ether, Brownian movement was slowed down but did...needle and by the cessation of Brownian movement, this was shown to be...
5.
Protoplasm
Book by William Seifriz; McGraw-Hill Book Company, Inc., 1936
Subjects: Protoplasm
...all sides and impart to it a movement similar to the kinetic motion...Particles exhibit active Brownian movement only when below a...size of particles exhibiting Brownian movement in water could be...particle which can exhibit Brownian movement. The amplitude of...
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journal articles on: Brownian Movement  - 89 results

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1.
Application of the Einstein Relation to Financial Data
Journal article by Takashi Obara; IUP Journal of Applied Economics, Vol. 9, 2010
Subjects: Brownian movements, Correlation analysis, Nonlinear equations, Stochastic models, Studies, Time series
...a study by Einstein (1906) on the Brownian motion. In this article, Einstein studied the motion of a Brownian particle in liquid by the thermodynamical...understand the Einstein theory of the Brownian motion in the framework of Langevin...
2.
Joint Ventures and Risk Sharing
Journal article by Lloyd P. Blenman, Mingxin Xu; Journal of Business and Entrepreneurship, Vol. 21, 2009
Subjects: Brownian movements, Cash flow, Joint ventures, Risk sharing, Studies
...Expected excess revenue is posited to be a Brownian motion process.5 Case A: Linear Risk...entity where W^sub i^ are standard Brownian motions; W^sub 3^(t) : profit of the risky project represented by a third Brownian motion with the correlation structure...
3.
Determining the Value at Risk in the Shadow of the Power Law: the Case of the Sp-500 Index
Journal article by C-René Dominique, Luis Eduardo Rivera-Solis, François Des Rosiers; Journal of Global Business and Technology, Vol. 7, 2011
Subjects: Brownian movements, Indexes, Risk assessment, Stock prices, Studies
...INTRODUCTION The process known as Brownian motion (B (t)), first observed by...to make a B (t) out of a fractional Brownian motion (BH (t). Thus, studying B...convincingly argued for the use of fractional Brownian motion, (BH (t)), in financial...
4.
Pynchon's Transition from Ethos-based Postmodernism to Late-postmodern Stylistics
Journal article by Robert E. Kohn; Style, Vol. 43, 2009
Subjects: Art, Books, Brownian movements, Reading
...Seurats cool static calm," but somehow "got those dots behaving dynamically, violent ensembles of energy-states, Brownian movement" (587). In Tancrcdis "glowing field of particles," one could imagine "a contra- Venezia, the almost previsual...
5.
A Synthesis of Binomial Option Pricing Models for Lognormally Distributed Assets
Journal article by Don M. Chance; Journal of Applied Finance, Vol. 18, 2008
Subjects: Binomial distribution, Brownian movements, Convergence, Securities prices, Stochastic models, Studies
...to here as JKYABMC models); and 3) discretetime Geometric Brownian motion or ABMD models (referred to here as JKYABMD models...a discrete-time process that converges to the continuous Brownian motion process in the limit and accurately prices options...
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magazine articles on: Brownian Movement  - 21 results

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1.
Life Puts Random Motions to Work
Magazine article by Ronald F. Fox; World and I, Vol. 16, October 2001
Subjects: Brownian motion processes--Research, Brownian motion--Research, Molecular biology--Research, Molecular dynamics--Research
...molecular vibrations and movements, solely into useful...Brownian motion see "Brownian Motion" on p. XXX...nanotechnology. Diffusive movement Each cells metabolic...erratic, fluctuating movement is the norm, both...mostly as translational movements or diffusion. Both...erratic motion, called Brownian motion, that is a...
2.
Albert Einstein, Radical: A Political Profile
Magazine article by John J. Simon; Monthly Review, Vol. 57, May 2005
Subjects: Activism, Einstein, Albert--Beliefs, opinions and attitudes, Einstein, Albert--Biography, Einstein, Albert--Influence, Einstein, Albert--Political activity, Peace movements--History, Peace movements--Political aspects, Peace movements--Social aspects
...Du Bois and others in the civil rights movement, held a rally in Washington at which...on to be a leader in the civil rights movement and is now chair of the NAACP. The press...programs caused the collapse of the Wallace movement. Trumans surprise reelection removed...
3.
After Fifty Years, Do We Remember Our Humanity?
Magazine article by David Krieger; The Humanist, Vol. 65, July 2005
Subjects: Antinuclear movement, Cold War, 1945-1991, Einstein, Albert--Political activity, Humanity, International relations, Nuclear disarmament, Philosophers--Political activity, Russell, Bertrand--Political activity, Scientists--Political activity
...Einstein in 1905 published revolutionary scientific papers on Brownian motion, the photoelectric effect, and special relativity...University, co-formulating the equation describing star movements. Frederic Joliot-Curie collaborated with his wife Irene...
4.
Harnessing the Energy
Magazine article; World and I, Vol. 16, October 2001
Subjects: ATP--Research, Adenosine triphosphate--Research, Kinesin--Research
...triphosphate), into linear movement along the cells microtubule...by the new view of rectified Brownian movement. Cells use ATPs energy...translocation is powered by Brownian motion (i.e., heat...created by ATP rectifies this Brownian motion. The model of rectified...
5.
The Songs Remain the Same... Sort of
Magazine article by Philip Chang; Phi Kappa Phi Forum, Vol. 86, Fall 2006
Subjects: Classical music, Hybridization, Musical recordings, Radio stations, Rap music, Rock music, Television networks
...of idioms as "molecules actively rushing about in Brownian movement" aptly describes the common practice of style hybridization...technology. "The mashup scene is the first cultural movement of the Internet Age," says Los Angeles-based experimentalist...
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newspaper articles on: Brownian Movement  - 2 results

 
 
1.
Lowry Puts a Spring in Step of Rambert's Visit
Newspaper article; The Journal (Newcastle, England), March 17, 2007
...to dance. Inspired by the movement and gusto inherent in Lowrys...paintings of the sea and the final movement is very much inspired by the...Einsteins major theories: Brownian motion, photoelectric effect...However, I was inspired by Brownian motion to create a ducking...
2.
Say It Loud; Music of James Brown Bridged Styles, Defined Eras
Newspaper article; The Washington Times, December 29, 2006
...It Loud (Im Black and Proud)," embraced the black power movement. Yet even here, Mr. Brown was stubbornly idiosyncratic...hip-hop, whose rhythmic underpinnings owe a huge debt to Brownian funk. The grooves of songs like "The Grunt (Parts 1 2...


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encyclopedia articles on: Brownian Movement  - 7 results

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1.
Brownian Movement
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
BROWNIAN MOVEMENT zigzag, irregular motion exhibited by...about by the molecules of the fluid. Brownian motion is observed for particles about...satisfactory theoretical treatment of Brownian motion was made by Albert Einstein in...
2.
Vibration
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...commonly an oscillatory motion a movement first in one direction and then...by the molecules in matter (see Brownian movement ). Any simple vibration is described...vibration is longitudinal, for the movement is to and fro along the direction...
3.
Microscope
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...of the objective and brought to a focus directly beneath it. This instrument is used especially in the study of Brownian movement in colloidal solutions (see colloid ). The phase-contrast microscope, a modification of the compound microscope...
4.
Einstein, Albert
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...relativity , explained the photoelectric effect , and studied the motion of atoms, on which he based his explanation of Brownian movement . In 1909 his work had already attracted attention among scientists, and he was offered an adjunct professorship...
5.
Colloid
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...examine a colloid, the colloidal particles appear as tiny points of light in constant motion; this motion, called Brownian movement , helps keep the particles in suspension. Absorption is another characteristic of colloids, since the finely divided...
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