Snell's law
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Snell's law is a formula used to describe the relationship between the angles of incidence and refraction, when referring to light or other waves passing through a boundary between two different isotr
Reproduction of a page of Ibn Sahl's manuscript showing his discovery of the law of refraction
Willebrord Snellius
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Snell is best known for discovering the law of refraction of light, now known as Snell's law, his pioneering work in survey known as Snellius's triangulation, and the Snellius–Pothenot problem, a mean
Snell's law
…accurate empirical law, partially as a result of slightly altering his data to fit theory (see: confirmation bias). The law was eventually named after Snell, although it was first discovered by the Persian scientist Ibn Sahl, at Baghdad court in 984. In the manuscript On Burning Mirrors and Lenses, Sahl…
Willebrord Snel van Royen (1580–1626)
Quadrant of Snellius, Museum Boerhaave, Leiden
Snellius's Triangulation (1615)
Commemorative plaque on Snellius's house in Leiden