de Sitter universe
de Sitter universe A model of an expanding universe in which there is no matter or radiation but the expansion is driven by a
cosmological constant. It was proposed in 1917 by W.
de Sitter. Although this model is physically unrealistic, it introduced the idea that the real Universe might be expanding. An expansion phase which is very similar to that in the de Sitter model also plays an important role in modern theories of the
inflationary universe.
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This is Haarlem's Willem Co ...
Newspaper article from: The Washington Post; 5/12/2002; 347 words
; This is Haarlem's Willem Coymans (1623-1659), a prosperous...swagger of this portrait isn't just the sitter's. What conveys it is the swordplay...brush. -- Paul Richard Frans Hals's "Willem Coymans" (1645), a gift from Andrew...
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 "The Mail on Sunday (London, England)")
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A stunning display of wealth and true genius; Striking a pose ... Willem van Heythuysen by Frans Hals is full of 'theatrical bluffness'.
Newspaper article from: The Mail on Sunday (London, England); 7/1/2007; 700+ words
; ...virtuoso painter, but what interested him and, Isuppose, his sitters, was silk and setting rather than psychology. In the noble...all their own, and not thepainter's, or the genre's. Willem van Heythuysen, for instance, in the more intimate of two...
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 "Reforma (México D.F., México)")
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Aleph Cero/ Expansion cosmica.(Cultura)
Newspaper article from: Reforma (México D.F., México); 1/23/2003; 700+ words
; ...su trabajo, el astrnomo holands Willem de Sitter descubri que las ecuaciones de la...El descubrimiento terico de de Sitter fue toda una sorpresa en su momento...teora. Pero el modelo cosmolgico de Sitter, consecuencia de esa misma teora...
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Is the biggest paradigm shift in the history of science at hand?
Magazine article from: Progress in Physics; 10/1/2005; ; 700+ words
; ...the Dutch astronomer-cosmologist Willem de Sitter, who suggested in 1917, together with Einstein, the de-Sitter-universe, which was based on...Theory of Relativity. The de-Sitter-universe has no mass, but has...
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Universe by number
Magazine article from: Natural History; 12/1/2002; ; 700+ words
; ...curved, an international community of physicists and astronomers such as Alexander Friedmann, Georges Lemaitre, Willem de Sitter, and Albert Einstein proposed various models of the shape of the universe. Because galaxies are the glowing tracers...
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 "Skeptic (Altadena, CA)")
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The day without yesterday: is intelligent design really like big bang theory?(Eric Rothschild)(Interview)
Magazine article from: Skeptic (Altadena, CA); 1/1/2006; ; 700+ words
; ...Einstein's 'static' model, a temporally infinite, 4-dimensional model of the universe and Dutch astronomer Willem De Sitter's essentially flat, empty model of the universe were essentially two bookends of a larger, truly dynamic model...
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The Day Without Yesterday
Magazine article from: Skeptic; 1/1/2006; ; 700+ words
; ...Einstein's 'static' model, a temporally infinite, 4-dimensional model of the universe and Dutch astronomer Willem De Sitter's essentially flat, empty model of the universe were essentially two hookends of a larger, truly dynamic model...
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The will to disbelieve
Newspaper article from: Jerusalem Post; 8/29/1997; ; 700+ words
; ...to deny God. When Albert Einstein first proposed his General Theory of Relativity in 1916, two mathematicians, Willem de Sitter and Alexander Friedmann, working independently, pointed out that the theory could only be correct if the universe...
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US cosmologists predict static universe in three trillion years
News Wire article from: The Hindustan Times; 5/23/2007; 690 words
; ...It will be published in the October issue of the Journal of Relativity and Gravitation. Taking Dutch astronomer Willem de Sitter's early 1900s theory of a static model of the universe forward, both Krauss and Scherrer have begun to envision...
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AWARD-WINNING ESSAY PREDICTS DARK ENERGY WILL BE THE DEATH OF COSMOLOGY
News Wire article from: US Fed News Service, Including US State News; 5/24/2007; 700+ words
; ...existing astronomical observations allowed prominent figures like British astronomer Fred Hoyle and Dutch astronomer Willem de Sitter to argue convincingly for a steady-state universe with a basic structure that is eternal and unchanging. Ironically...
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Willem De Sitter
Book article from: The Columbia Encyclopedia, Sixth Edition
Willem De Sitter see Sitter, Willem de .
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Willem de Sitter
Book article from: The Columbia Encyclopedia, Sixth Edition
Willem de Sitter , 1872-1934, Dutch astronomer and mathematician...motion. In the combined Einstein-de Sitter model, the universe is expanding at a decreasing rate that approaches zero. De Sitter's works in English include Kosmos (1932...
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Sitter, Willem de
Book article from: A Dictionary of Astronomy
Sitter, Willem de See de Sitter, Willem .
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de Sitter, Willem
Book article from: A Dictionary of Astronomy
de Sitter, Willem (1872–1934)Dutchmathematician and astronomer. He was...implications for astronomy. From it he derived what is now called the de Sitter universe , the first theoretical model of an expanding Universe. In...
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Big Bang Theory
Book article from: World of Earth Science
...In 1919, a Dutch astronomer, Willem de Sitter, showed Einstein's theory could...expanding universe. Mathematically, de Sitter's solution for Einstein's equation...drew similar conclusions. Like de Sitter, Lemaître, who worked...
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