| The Columbia Encyclopedia, Sixth Edition. 2001-07. |
| Snell, Willebrord |
(v l´ brôrt sn l, snl s) (KEY) , 1591–1626, Dutch mathematician. He is generally credited with the discovery (1621) of the law of the refraction of light. In 1613 he became professor of mathematics at the Univ. of Leiden. His two chief works are Eratosthenes Batavus (1617) and Cyclometricus (1621). |
| The Columbia Encyclopedia, Sixth Edition. Copyright © 2007 Columbia University Press. |
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