Willem de Sitter (6 May 1872 – 20 November 1934) was a Dutch mathematician, physicist, and astronomer. Born in Sneek, de Sitter studied mathematics at...

energy density and negative pressure). De Sitter space and anti-de Sitter space are named after Willem de Sitter (1872–1934), professor of astronomy at...

named after Willem de Sitter (1872–1934), professor of astronomy at Leiden University and director of the Leiden Observatory. Willem de Sitter and Albert...

A de Sitter universe is a cosmological solution to the Einstein field equations of general relativity, named after Willem de Sitter. It models the universe...

The Einstein–de Sitter universe is a model of the universe proposed by Albert Einstein and Willem de Sitter in 1932. On first learning of Edwin Hubble's...

first predicted by Willem de Sitter in 1916, who provided relativistic corrections to the Earth–Moon system's motion. De Sitter's work was extended in...

University. Ulbo, the sociologist, was the grandson of astronomer Willem de Sitter (1872-1934). He studied sociology at the University of Amsterdam, and...

structural geology. De Sitter was known for his research on the geology of the Alps and Pyrenees. His father was the astronomer Willem de Sitter (1872–1934), and...

The de Sitter effect was described by Willem de Sitter in 1913 (as well as by Daniel Frost Comstock in 1910) and used to support the special theory of...

Willem de Sitter (1872–1934) was a Dutch mathematician, physicist and astronomer. De Sitter may also refer to: De Sitter (crater), a lunar crater 1686...

de Sitter effect (named after the Dutch physicist Willem de Sitter) has been applied to two unrelated phenomena: De Sitter double star experiment De Sitter...

Notable astronomers that have worked or directed the observatory include Willem de Sitter, Ejnar Hertzsprung and Jan Oort. Leiden University established the...

In 1925 he completed his PhD in astronomy under the supervision of Willem de Sitter and was invited by R.T.A. Innes to join the Union Observatory in Johannesburg...

of World War I). General relativity prompted cosmogonists such as Willem de Sitter, Karl Schwarzschild, and Arthur Eddington to explore its astronomical...

astronomer. He received his PhD in 1927 at Leiden University under Willem de Sitter and then went to Yale University. From 1941 until 1966 he was editor...

Dutch astronomer Willem de Sitter to help demonstrate that the theory of general relativity would work with a static model; Willem demonstrated that...

expressionist painter Willem de Rooij (b. 1969), Dutch artist Willem de Sitter (1872–1934), Dutch mathematician, physicist and astronomer Willem de Vlamingh (1640–ca...

De Sitter is a lunar impact crater that is located near the northern limb of the Moon, to the north of the Baillaud–Euctemon crater pair. Due to its location...

were endorsed on largely aesthetic grounds by cosmologists including Willem de Sitter, Carl Friedrich von Weizsäcker, George McVittie, and George Gamow (who...

1943–) Andrew Siemion (United States, 1980–) Willem de Sitter (Netherlands, 1872–1934) Charlotte Moore Sitterly (United States, 1898–1990) Brian A. Skiff...

connected for n at least 3. The de Sitter space, as well as the anti-de Sitter space is named after Willem de Sitter (1872–1934), professor of astronomy...

real velocities. In 1931 he wrote a letter to the Dutch cosmologist Willem de Sitter expressing his opinion on the theoretical interpretation of the redshift-distance...

– Walter S. Adams 1929 – Frank Schlesinger 1930 – Max Wolf 1931 – Willem de Sitter 1932 – John S. Plaskett 1933 – Carl V.L. Charlier 1934 – Alfred Fowler...

physicist and astronomer Willem de Sitter, a model of a continuously expanding Universe with zero cosmological constant (Einstein–de Sitter spacetime). In 1998...

detective writer Geert Aeilco Wumkes (1869–1954), theologian and historian Willem de Sitter (1872–1934), mathematician, physicist and astronomer Pieter Sjoerds...

as 1923. The word does not appear unhyphenated until about 1934 by Willem de Sitter. Beginning with observations in 1912, Vesto Slipher discovered that...

Oosterhoff, and was taught by Ejnar Hertzsprung, Antonie Pannekoek, Willem de Sitter, Jan Woltjer, Jan Oort, and the physicist Paul Ehrenfest. He received...

(born 1953), primatologist Maarten Schmidt (born 1929), astronomer Willem de Sitter (1872–1934), mathematician, physicist and astronomer Hendrik Tennekes...

IAU has its head office on the second floor of the Institut d'Astrophysique de Paris in the 14th arrondissement of Paris. This organisation has many working...

the request of his former student and director of Leiden Observatory Willem de Sitter, Kapteyn went back to Leiden to assist in upgrading the observatory...