Snell-s-law meaning

snĕlz
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.
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(optics) The law that, for a ray incident on the interface of two media, the sine of the angle of incidence times the index of the refraction of the first medium is equal to the sine of the angle of refraction times the index of refraction of the second medium.
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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