Willem
de Sitter
Born in Sneek, Friesland, Nederland
Ancestors 
Brother of
Wobbine Catharine de Sitter
Husband of
Eleonore Suermondt
— married
6 Dec 1898 in Cape Town, Cape Colony, South Africa
Father of
Lamoraal Ulbo de Sitter
Died
at age 62
in Leiden, Zuid-Holland, Nederland
Profile last modified
| Created 8 May 2018
This page has been accessed 581 times.
Biography
Willem de Sitter is Notable.
Willem was born in 1872. He was the son of Lamoraal de Sitter and Catharine Bertling. [1]
He passed away in 1934. [2]He was a Dutch mathematician, physicist, and astronomer.
De Sitter made major contributions to the field of physical cosmology. He co-authored a paper with Albert Einstein in 1932 in which they discussed the implications of cosmological data for the curvature of the universe. He also came up with the concept of the de Sitter space and de Sitter universe, a solution for Einstein's general relativity in which there is no matter and a positive cosmological constant. This results in an exponentially expanding, empty universe.
Sources
- ↑ AlleFriezen in Leeuwarden (Netherlands), Civil registration births Burgerlijke Stand Sneek - Tresoar, Bron: boek, Part: 1032, Period: 1872, Sneek, archive 30-34, inventory number 1032, May 6, 1872, Geboorteregister 1872, record number 117 Birth Willem de Sitter
- ↑ https://en.wikipedia.org/wiki/Willem_de_Sitter
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Categories: Physicists | Mathematicians | Astronomers | Dutch Notables | Notables