Caspar Wessel
Caspar Wessel 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. Caspar Wessel, Norwegian-Danish mathematician and cartographer (d. 1818)
8 June 1745
Born on the same birth day (8 June): Charlotte Scott • Dana Wynter • George Edward Hughes • Mimi Mariani • Nancy Sinatra