Caspar Wessel

Caspar Wessel
Born	(1745-06-08)8 June 1745 Vestby
Died	25 March 1818(1818-03-25) (aged 72) Copenhagen
Nationality	Danish  Norwegian
Alma mater	University of Copenhagen
Known for	Complex numbers Complex plane Vectors
Partner	Cathrine Elisabeth Brinck f. Müller
Awards	Knight of the Order of the Dannebrog
Scientific career
Fields	Mathematics

Caspar Wessel (8 June 1745, Vestby – 25 March 1818, Copenhagen) was a Danish–Norwegian mathematician and cartographer. In 1799, Wessel was the first person to describe the geometrical interpretation of complex numbers as points in the complex plane and vectors.^[1]