See also: 1625 in science, other events of 1626, 1627 in science and the list of years in science.
Births Deaths April 9 - Francis Bacon, English philosopher and a founder of modern scientific research ( born 1561) October 30 - Willebrord Snell, Dutch mathematician and physicist who devised the basic law of refraction, known as Snell's law (born 1581) December 10 - Edmund Gunter, English mathematician (born 1581)