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Einstein relation (kinetic theory)

In physics (specifically, the kinetic theory of gases), the Einstein relation is a previously unexpected[clarification needed] connection revealed independently by William Sutherland in 1904, Albert Einstein in 1905, and by Marian Smoluchowski in 1906 in their works on Brownian motion. The more general form of the equation in the classical case is

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Einstein relation (kinetic theory)

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displaystyle relation frac mu einstein equation diffusion text mobility mathrm particles case rho particle mathbf number classical drift see general

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