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NICOL, WILLIAM

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Originally appearing in Volume V19, Page 662 of the 1911 Encyclopedia Britannica.
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NICOL, See also:WILLIAM (? 1768-1851}, Scottish physicist, was See also:born about 1768, and died as See also:Edinburgh on the 2nd of See also:September 1851. Nothing is known of his See also:early See also:history beyond the fact that, after amassing a small competence as a popular lecturer on natural See also:philosophy, he settled in Edinburgh to live a very retired See also:life in the society of his apparatus alone. Besides the invention of the See also:prism known by his name (" A method of increasing the divergence of the two rays in calcareous spar, so as to produce a single See also:image," New Edin. Journ., 1828), he devoted himself chiefly to the examination of fluid-filled cavities in crystals, and of the microscopic structure of various kinds of fossil See also:wood. His skill as a working See also:lapidary was very See also:great; and he prepared a number of lenses of See also:garnet and other See also:precious stones, which he preferred to the achromatic microscopes of the See also:time.

End of Article: NICOL, WILLIAM

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