Graham's law of diffusion(redirected from Graham's law)
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Graham's law of diffusion[′grā·əmz ¦lȯ əv di′fyü·zhən]
The law that the rate of diffusion of a gas is inversely proportional to the square root of its density.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.