Snell's Law Definition
snĕlz
noun
A law describing the refraction of a ray of light at the surface between two media, such that the product of the refractive index of the first medium and the sine of the angle of incidence equals the product of the refractive index of the second medium and the sine of the angle of refraction.
American Heritage
Origin of Snell's Law
After Willebrord Snel van Royen (1580–1626), also called Willebrord Snellius, Dutch astronomer and mathematician who formulated the law
From American Heritage Dictionary of the English Language, 5th Edition
For Willebrord van Roijen Snell Dutch mathematician
From Wiktionary
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