Willebrord Snellius

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Willebrord Snellius
Willebrord Snel van Royen (1580–1626)
Born	13 June 1580 Leiden, Dutch Republic
Died	30 October 1626(1626-10-30) (aged 46) Leiden, Dutch Republic
Nationality	Dutch
Alma mater	University of Leiden
Known for	Snell's law Snellius' triangulation Snellius–Pothenot problem
Scientific career
Fields	Astronomy and mathematics
Institutions	University of Leiden
Academic advisors	Ludolph van Ceulen Rudolph Snellius
Notable students	Jacobus Golius

Willebrord Snellius^[1][2] (born Willebrord Snel van Royen)^[3] (13 June 1580^[4] – 30 October 1626) was a Dutch astronomer and mathematician, commonly known as Snell. His name is usually associated with the law of refraction of light known as Snell's law.^[5]

The lunar crater Snellius is named after Willebrord Snellius. The Royal Netherlands Navy has named three survey ships after Snellius, including a currently-serving vessel.