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Colloidal suspensions, Brownian motion, molecular reality: a short history

M D Haw

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In the first decade of the 20th century, nearly a hundred years of work on the phenomenon of Brownian motion culminated in theory and experiments that demonstrated irrefutably the discontinuous or molecular nature of matter. Colloidal suspensions and the phenomenon of Brownian motion thus became the key to confirmation of the 'new world-view' of statistical mechanics, the statistical basis of thermodynamics. One may conveniently identify four 'stages' in the historical development of 'Brownian motion science', characterized in turn by discovery, observation, theoretical prediction, and quantitative confirmation. We are living, of course, in the fifth stage, that of application: the modern discipline of 'soft matter'.


PACS

82.70.Dd Colloids

82.70.Kj Emulsions and suspensions

05.40.Jc Brownian motion

Subjects

Soft matter, liquids and polymers

Statistical physics and nonlinear systems

Chemical physics and physical chemistry

Dates

Issue 33 (26 August 2002)

Received 25 June 2002

Published 9 August 2002



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