Willebrord Snellius
Willebrord Snellius 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.
13 June 1580
Born on the same birth day (13 June): Adrien Baillet • Blair Chapman • Deepika Kumari • Jason Spezza • Jim Guy Tucker • José Antonio Páez • Kristine Miller • Nick Brown • Red Symons • Svetlana Krivelyova • Tom King, Baron King of Bridgwater
Born in the same month (June 1580): Adriaen van Stalbemt • Daniël Heinsius