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Willem de Sitter (6 May 1872 – 20 November 1934) was a Dutch mathematician, physicist, and astronomer . Life and work. Born in Sneek, de Sitter studied mathematics at the University of Groningen and then joined the Groningen astronomical laboratory. He worked at the Cape Observatory in South Africa (1897–1899).
Willem de Sitter (born May 6, 1872, Sneek, Neth.—died Nov. 20, 1934, Leiden) was a Dutch mathematician, astronomer, and cosmologist who developed theoretical models of the universe based on Albert Einstein’s general theory of relativity.
- The Editors of Encyclopaedia Britannica
Willem de Sitter was a Dutch mathematician, physicist, and astronomer who made major contributions in physical cosmology. View three larger pictures. Biography. Willem de Sitter's parents were Lamoraal Ulbo de Sitter and Catharine Theodore Wilhelmine Bertling.
A comprehensive biography of Willem de Sitter, a Dutch astronomer and cosmologist who collaborated and debated with Einstein. The book covers his life, work, controversies, and legacy in astronomy and physics.
- Jan Guichelaar
In the fall of 1916 de Sitter discussed the theory with Einstein, and the discussions led Einstein to attempt to apply his theory to the universe at large. The result was Einstein’s closed or spherical model of 1917, incorporating the cosmological constant (Λ).
Willem de Sitter was a Dutch astronomer who made significant contributions to cosmology, astronomy, and mathematics. He received the Bruce Medal in 1931 for his work on the expansion of the universe, the rotation of the earth, and the motions of Jupiter's satellites.
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Jun 7, 2024 · A Dutch mathematician and astronomer who supported the theory of relativity and derived the de Sitter universe model. He also studied Jupiter's satellites and the Earth's rotation.
