Willem De Sitter
by Science Photo Library
Title
Willem De Sitter
Artist
Science Photo Library
Medium
Photograph - Photograph
Description
Willem de Sitter. Portrait of Willem de Sitter (1872-1934), Dutch astronomer & mathematician. De Sitter studied the motion of stars and the moons of Jupiter. In 1916 Einstein published his theory of relativity and De Sitter's interest in it led to the theory being publicised in English- speaking countries. Einstein had found a solution to the relativity equations that yielded a static universe. De Sitter demonstrated that the equations were also solved by an expanding universe that contained no matter. De Sitter's solution was modified to produce a description of an expanding universe with matter; this model is known as the Einstein-de Sitter universe
Uploaded
February 16th, 2021
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