Scottish National Dictionary (1700–)
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First published 1976 (SND Vol. X, list of scientific terms with Scottish connections).
This entry has not been updated since then but may contain minor corrections and revisions.
GRAHAM. Chem. In phr. Graham's law of diffusion, by which the rate of diffusion of a gas is inversely proportional to the square root of its density, formulated in 1834 by Thomas Graham (1805–69), of Glasgow, chemist and professor in Glasgow and London, Master of the Mint, founder of colloid science. Hence Graham's tube, a glass tube plugged at one end, used in chemical experiments, such as Graham employed.
