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History
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Willebrord Snel van Royen (1580–1626)
Willebrord Snel van Royen (1580–1626)
Quadrant of Snellius Image: Museum Boerhaave, Leiden
Quadrant of Snellius Image: Museum Boerhaave, Leiden
Snellius' Triangulation (1615)
Snellius' Triangulation (1615)
Commemorative plaque on Snellius' house in Leiden
Commemorative plaque on Snellius' house in Leiden
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Reproduction of a page of Ibn Sahl's manuscript showing his discovery of the law of refraction
Reproduction of a page of Ibn Sahl's manuscript showing his discovery of the law of refraction
Snell's law on a wall in Leiden
Snell's law on a wall in Leiden