61. MSN Encarta - De Sitter, Willem Translate this page de sitter, willem (1872-1934), mathématicien, physicien et astronome néerlandais, Autres fonctionnalités Encarta. Rechercher de sitter, willem http://fr.encarta.msn.com/encyclopedia_741533825/De_Sitter_Willem.html

Accueil MSN Mon MSN Hotmail Rechercher ... Tout savoir sur la gamme Encarta Rechercher sur Encarta Article accessible sur abonnement MSN Encarta Premium : Acc©dez   30 000 articles encyclop©diques avec plus de 12 000 illustrations, un atlas mondial interactif, un guide du Web et une palette compl¨te de ressources et d'outils ©ducatifs. 34,99 € par an (service d’acc¨s   Internet non compris). En savoir plus. Cet article n'est accessible que si vous ªtes abonn©   MSN Encarta Premium. Dans ce cas, connectez-vous en cliquant sur le lien Aller sur MSN Encarta Premium (ci-dessus). De Sitter, Willem De Sitter, Willem (1872-1934), math©maticien, physicien et astronome n©erlandais, principalement connu pour ses recherches sur la structure de l’... Encarta vous int©resse ? Abonnez-vous d¨s maintenant et b©n©ficiez de : Plus de 30 000 articles 2 000 analyses d'oeuvre Plus de 12 000 m©dias (dont des extraits sonores, des vid©os et des m©dias interactifs) Un atlas mondial interactif Une palette compl¨te de ressources et d'outils ©ducatifs Un guide du Web Plus de r©sultats pour De Sitter, Willem

62. The New York Times Store Photographs Science Technology Albert Einstein and Dr. willem de sitter in Pasadena, Calif., 1932 The New YorkTimes Photo Archives. http://www.nytimes.com/nytstore/photos/science/NSAP307.html

SEARCH PHOTOGRAPHS New York Sports American Experience ... Favorite Sets For information about corporate sales and group discounts, photographs view larger image Einstein, De Sitter, 1932 Albert Einstein and Dr. Willem De Sitter in Pasadena, Calif., 1932 The New York Times Photo Archives view a sample of our framing >> select product / price (11x14) EINSTEIN, DE SITTER, 1932 / $195 (11x14) EINSTEIN, DE SITTER, 1932 / FRAMED / $340 (16x20) EINSTEIN, DE SITTER, 1932 / $375 (16x20) EINSTEIN, DE SITTER, 1932 / FRAMED / $540 (20x24) EINSTEIN, DE SITTER, 1932 / $495 (20x24) EINSTEIN, DE SITTER, 1932 / FRAMED / $745 Home delivery subscribers receive a 10% discount on this item at checkout. Browse for photos in related categories: Photographs Publication, reproduction, use in advertising or for purpose of trade is prohibited without written permission.

63. De Sitter Space@Everything2.com My explanation of the de sitter space that follows is constructed from a widevariety of sources willem de sitter, online blurb by the Japanese NASDA at http://www.everything2.com/index.pl?node_id=560692

64. Rikai Language Portal Map WordMap sitter (n). Dutch astronomer who calculated the size of the universe and suggestedthat it is expanding (18721934) (sitter, willem de sitter) http://www.rikai.com/wordmap/sitter#n%2

65. Willem Jacob Luyten, March 7, 1899—November 21, 1994 | By Arthur Upgren | Biogr included PJ van Rhijn, Ejnar Hertzsprung, willem de sitter, and Jan H. Oort . His contacts at Leiden included Kapteyn, de sitter, and Paul Ehrenfest, http://bob.nap.edu/html/biomems/wluyten.html

BIOGRAPHICAL MEMOIRS National Academy of Sciences Photo by Kallman Studio Willem Jacob Luyten By Arthur Upgren WILLEM LUYTEN WAS THE central figure in the determination of the stellar luminosity function, the frequency function of stars by their luminosity. In this, his major research contribution, he followed in the tradition of Dutch astronomers, mostly of the Leiden Observatory, which began before 1900 with J. C. Kapteyn and included P. J. van Rhijn, Ejnar Hertzsprung, Willem De Sitter, and Jan H. Oort. Luyten was one of a number of distinguished students of these scientists who emigrated to the United States and had a memorable career. His contemporaries included Bart J. Bok, Dirk Brouwer, Gerard P. Kuiper, Jan Schilt, Kaj Aa. Strand, and Peter van de Kamp. Luyten spoke of his ancestry as part French, originating in Provence in the fourteenth century. The family name may have been Lutin and derived from lute players and minstrels attending the popes who resided in Avignon. In 1377 the popes moved back to Rome and the progenitor lute player resettled at the Court of Burgundy. The dukes there united the cities of Holland, and during ducal rule over the next century, the family may have found its way to the Netherlands. His mother's family name of Francken reveals her origin there. Luyten, himself, was born of parents of North Holland, who had settled in Indonesia, then a colony of the Netherlands. His birth on March 7, 1899, was in the city of Semarang in north-central Java, where his father taught French in the local high school. Luyten lived there until 1912, when the family moved back to the Netherlands. At that time he spoke Dutch and French; he also became fluent in German and English before his high school graduation. Later in college he mastered Latin and Greek, and still later, he picked up some Spanish and Italian, and finally, in 1927, Russian. He was rightfully proud of his ability to learn to read and speak so many languages.

66. Table Of Contents For Einstein, A.; Schulmann, R., Kox, A.J., Janssen, M., Et Al From willem de sitter, 1 April 1917 322. To Hendrik A. Lorentz, 3 April 1917 From willem de sitter, 10 April 1918 502. To Hugo A. Krüss, before 11 April http://www.pupress.princeton.edu/TOCs/c6206.html

SEARCH: Keywords Author Title More Options Power Search Search Hints E-MAIL NOTICES NEW IN PRINT E-BOOKS ... HOME PAGE The Collected Papers of Albert Einstein, Volume 8: The Berlin Years: Correspondence, 1914-1918. Albert Einstein Book Description TABLE OF CONTENTS: List of Texts PART A Vol. 1, 116. From Mileva Maric, after 7 July 1901* Vol. 5, 136a. From Dmitry Mirimanoff, 5 February 1909* Vol. 5, 136b. To Dmitry Mirimanoff, 9 February 1909* Vol. 5, 312a. To Marie Curie, 23 November 1911* Vol. 5, 375a. From Walther Nernst, 23 March 1912* Vol. 5, 430. To Unknown Addressee, 2 March 1913* Vol. 5, 500a. To Jakob Ehrat, 7 January 1914* *The above documents were discovered after the publication of Volume Five. 1. To Mileva Einstein-Maric, 2 April 1914 2. To Paul Ehrenfest, before 10 April 1914 3. To Mileva Einstein-Maric, Hans Albert and Eduard Einstein, 10 April 1914 4. From Paul Ehrenfest, 10 April 1914 or later 5. To Joseph Petzoldt, 14 April 1914 6. To Adolf Hurwitz and Family, 4 May 1914 9. From Paul Ehrenfest, 20 May 1914 10. From Paul Ehrenfest, 21 May 1914

67. Table Of Contents For Einstein, A.; Hentschel, A., Trans.: The Collected Papers From willem de sitter, 1 April 1917 312 322. To Hendrik A. Lorentz, 3 April 1917 313 From willem de sitter, 10 April 1918 523 502. To Hugo A. Krüss, http://www.pupress.princeton.edu/TOCs/c6174.html

SEARCH: Keywords Author Title More Options Power Search Search Hints E-MAIL NOTICES NEW IN PRINT E-BOOKS ... HOME PAGE The Collected Papers of Albert Einstein, Volume 8: The Berlin Years: Correspondence, 1914-1918. (English supplement translation.) Albert Einstein Translated by Ann M. Hentschel Klaus Hentschel, Consultant Book Description TABLE OF CONTENTS: List of Texts v Publisher's Foreword xiii Acknowledgments xxv Texts 3 Vol. 1, 116. From Mileva Maric, after 7 July 1901 3 Vol. 5, 136a. From Dmitry Mirimanoff, 5 February 1909 4 Vol. 5, 136b. To Dmitry Mirimanoff, 9 February 1909 5 Vol. 5, 312a. To Marie Curie, 23 November 1911 5 Vol. 5, 375a. From Walther Nernst, 23 March 1912 6 Vol. 5, 430. To Unknown Addressee, 2 March 1913 7 Vol. 5, 500a. To Jakob Ehrat, 7 January 1914 8 1. To Mileva Einstein-Maric, 2 April 1914 9 2. To Paul Ehrenfest, before 10 April 1914 9 3. To Mileva Einstein-Maric, Hans Albert and Eduard Einstein, 10 April 1914 11 4. From Paul Ehrenfest, 10 April 1914 or later 11 5. To Joseph Petzoldt, 14 April 1914 12 6. To Adolf Hurwitz and Family, 4 May 1914 13

68. WILLEM DE SITTER Il fait ses premières années d études dans cette ville. http://clubastronomie.free.fr/histoire/willem_de_sitter.htm

WILLEM DE SITTER Willem de Sitter est le fils d'un juge, président de la cour à Arnhem aux Pays-Bas. Il fait ses premières années d'études dans cette ville. Il s'inscrit plus tard à l'Université de Groningen, en physique mathématique, où il prépare un doctorat. De 1897 à 1899, il travaille à l'Observatoire royal de Capetown, en Afrique du Sud, avec David Gill. Puis, il revient à Groningen où il travaille avec Kapteyn jusqu'en 1908. Cette années-là, il est nommé professeur à l'Université de Leiden et, de 1919 jusqu'à sa mort, il sera directeur de l'Observatoire de Leiden.

69. Imago Mundi - Willem De Sitter. de Groningen (Pays-Bas), il a travaillé pour l essentiel à l unversité http://www.cosmovisions.com/Sitter.htm

Les gens de Sitter de Jupiter Einstein A B C ... Z

70. NPG D15602; Jan Willem De Winter NPG D15602; Jan willem de Winter. sitter Jan willem de Winter (17501812),Dutch admiral. sitter in 1 portrait. Artists John Evans (1753-1820). http://www.npg.org.uk/live/search/portrait.asp?LinkID=mp66096&rNo=0&role=art

71. De Sitter - Inflation The de sitter Model, which was first discoved by willem de sitter in 1917, isdefined by the following conditions. The first Friedmann Equation is http://scholar.uwinnipeg.ca/courses/38/4500.6-001/Cosmology/deSitter_Inflation.h

MPBodyInit('deSitter_Inflation_files') de Sitter Model This is a solution of the cosmological equations where only the cosmological constant provides energy density for the universe. Although at later times it is unrealistic, at early stages of the Big Bang Model it can represent the dominant contribution to the energy density of the universe when he universe gets temporarily stuck in high energy phases. The de Sitter Model, which was first discoved by Willem de Sitter in 1917, is defined by the following conditions: MPSetEqnAttrs('eq0001','',3,[[162,27,-1,-1,-1],[216,37,-1,-1,-1],[271,46,-2,-1,-1],[243,42,-1,-1,-1],[324,55,-2,-1,-1],[405,68,-2,-2,-2],[677,114,-4,-3,-3]]) MPSetEqnAttrs('eq0001','',3,[[162,27,-1,-1,-1],[216,37,-1,-1,-1],[271,46,-2,-1,-1],[243,42,-1,-1,-1],[324,55,-2,-1,-1],[405,68,-2,-2,-2],[677,114,-4,-3,-3]]) MPNNCalcTopLeft(document.mpeq0001ph,'1') MPDeleteCode('eq0001') The first Friedmann Equation is: MPSetEqnAttrs('eq0002','',3,[[239,68,5,-1,-1],[316,90,7,-1,-1],[398,113,9,-1,-1],[357,103,8,-1,-1],[477,138,11,-1,-1],[595,174,14,-2,-2],[995,289,23,-3,-3]]) MPSetEqnAttrs('eq0002','',3,[[239,68,5,-1,-1],[316,90,7,-1,-1],[398,113,9,-1,-1],[357,103,8,-1,-1],[477,138,11,-1,-1],[595,174,14,-2,-2],[995,289,23,-3,-3]])

72. PSIgate - Physical Sciences Information Gateway Search/Browse Results You searched for willem* +de* +sitter* +Born (subject(s) All ). This gave.1 hits in the PSIgate Database 1 hits in the Web Catalogue (View Web Catalogue http://www.psigate.ac.uk/roads/cgi-bin/psisearch.pl?term1=Willem de Sitter Born&

73. Biografia De Sitter, Willem De Translate this page sitter, willem de. (1872-1934) Astrónomo holandés, destacado por sus investigacionesen el campo de la mecánica celeste, n. en Sneek (Frisia) y m. en Leiden http://www.biografiasyvidas.com/biografia/s/sitter.htm

Inicio Buscador Las figuras clave de la historia Reportajes Los protagonistas de la actualidad Sitter, Willem de Inicio Buscador Recomendar sitio

74. Kosmologika - Vetenskapsmännen - Willem De Sitter Födelseland Holland Födelseår 1872 Död år 1934 willem de sitter Courtesy YerkesObservatory). willem de sitter föddes den 6 maj år 1872 i Holland. http://www.kosmologika.net/Scientists/Sitter.html

Födelseland: Holland Födelseår: 1872 Död år: 1934 Willem de Sitter föddes den 6 maj år 1872 i Holland. Han studerade vid universitetet i Groningen och tillbringade den största delen av sin karriär vid universitetet i Leiden där han hade hand om astronomiprogrammet. Observerade dessutom under ett kort tag med David Gill vid Godahoppsudden. Han arbetade mycket med jupitermånarnas rörelser och bestämde deras massor och omloppsbanor genom årtionden av observationer. Han återinförde astronomins grundläggande konstanter och bestämde variationen i Jordens rörelse. Utförde statistiska studier av fördelningen och rörelser hos stjärnor. Han är dock numera mest känd för hans bidrag till kosmologin. Hans lösning till Einsteins fältekvationer år 1917 visade att ett universum fritt från massa måste expandera. Senare fann de Sitter och Albert Einstein (1879-1955) en lösning med ett expanderande universum som inte är krökt. Modifierade Einsteins statiska teori inom kosmologin till en skenbart statisk teori och förutsade därmed att avståndet är proportionellt mot rödförskjutningen. Fick 1931 års Brucemedalj . Dog den 19 november år 1934.

75. Kosmologika - Vetenskapsmännen Translate this page 1931 sitter, willem de (1872-1934) 1937 Hertzsprung, Ejnar (1873-1967) 1938Hubble, Edwin (1889-1953) 1953 Chandrasekhar, Subrahmanyan (1910-1995) http://www.kosmologika.net/Scientists/

På Kosmologikas sidor återfinns på många ställen länkar till kortare biografier över olika vetenskapsmän som har deltagit i utvecklandet av dessa spännande teorier. På denna sida finns länkar till alla dessa biografier samlade på ett enda ställe. Personerna är dels listade i både bokstavs- och födelsedagsordning men även efter nobelprisår (för de personer som har fått Nobelpriset) samt i betydelsefullhetsordning för vetenskapen. Dessutom har jag nyligen lagt till Brucemedaljörer som är den högsta utmärkelsen inom astronomin, Nobelpriset undantaget, samt Fields medalj som är matematikens Nobelpris och som dessutom bara delas ut en gång vart fjärde år samt slutligen Wolfpriset som är ett israeliskt pris som rankas steget under Nobelpriset men som ofta är åtminstone ett decennium snabbare med utnämningarna. Alfabetisk ordning Ahlfors, Lars (1907- ) Alembert, Jean le Ronde d' (1717-1783) Alfvén, Hannes Olof Gösta (1908-1995) Alpher, Ralph A. (1921- ) ... Zwicky, Fritz (1898-1974) Födelsedagsordning Fermat, Pierre de (1601-1665) Pascal, Blaise (1623-1662) Huygens, Christiaan (1629-1695) Newton, Isaac (1642-1727) ... Smarr, Larry (194?- ) Nobelpristagare Lorentz, Henrik Antoon (1853-1928)

76. Science Timeline de sitter, willem, 1917, 1932, 1948. de Vries, Hugo, 1900, 1901, 1917. debye,Peter Joseph Wilhelm, 1932. deC, 1956. dedekind, Julius Wilhelm Richard, 1872 http://www.sciencetimeline.net/siteindex_d.htm

use checkboxes to select items you wish to download Select Index Letter: a b c d ... w-x-y-z da Vinci, Leonardo, 1482 Daimler, Gottlieb, 1883 Dalibard, Jean, 1982 Dalton, John, 1801, 1801, 1803, 1808 Dam, Henrik, 1934 Danielli, James Frederick, 1935 Dart, Raymond Arthur, 1925 Darwin, Charles Robert, 435 bce, 1829, 1844, 1844, 1858, 1859, 1867, 1867, 1871, 1871, 1872, 1901 Darwin, Erasmus, 1794, 1809 Dausset, Jean, 1954 Davis, Mark, 1980 Davis, Ronald, 1973, 1980 Davisson, Clinton Joseph, 1927 Davson, Hugh, 1935 Davy, Humphrey, 1799, 1807, 1813, 1821 Dawkins, Richard, 1973, 1975 Dawson, John M., 1979 de Beer, Gavin, 1930, 1934, 1940 de Broglie, Louis Victor, 1924, 1926, 1927, 1927, 1952 de Herbert, Joseph, 1778 de la Mettrie, Julian, 1747

77. Sitter Definition From Aiedu.com sitter definitation from aiedu.com A Free Internet Dictionary. Synonymssitter, willem de sitter. hypernym astronomer uranologist stargazer http://dict.aiedu.com/word/sitter

An Internet Dictionary! Welcome! My Dictionary Help Links Log In ... Sign Up Search In Wordnet noun sitter > Dutch astronomer who calculated the size of the universe and suggested that it is expanding (1872-1934) (noun.person) Synonyms: Sitter Willem de Sitter hypernym: astronomer uranologist stargazer sitter > an organism (person or animal) that sits (noun.person) Synonyms: sitter antonym: stander hypernym: organism being domain category: animal animate being beast brute ... fauna sitter > a person engaged to care for children when the parents are not home (noun.person) Synonyms: babysitter baby-sitter sitter hypernym: keeper sitter > a person who poses for a painter or sculptor (noun.person) Synonyms: artist's model sitter hypernym: model poser sitter > a domestic hen ready to brood (noun.animal) Synonyms: brood hen broody broody hen setting hen ... sitter hypernym: hen biddy Search In cDict sit.ter 2 = babysitter Other words starts with s sales sahib saffron safeguarded ... salty 2005 AI Edu - Power the Internet Education. a b c d ... z Link Partner: Oregon daily Cape Girardeau Real Estate Utah Classifieds Magazine Subscriptions ... Clay Aiken Tickets

78. The Theoretical Science Establishment willem de sitter (18721934) Einstein, in his 1916 Paper argued that theuniverse was immobile . The Dutch mathematician and astronomer de sitter http://www.fixedearth.com/theoretical_science_establishmen.htm

The Theoretical Science Establishment Controls Cosmological And Biological Sciences PART II The History of Big Bangism’s Triumph: A Comedy of Errors Beginning just before the Einstein Revolution was launched by his 1905 Special Relativity paper, let’s weave into the woof and warp of modern cosmology (cosmogony) some of the theoretical input that has brought us to the present day scene wherein the Big Bang Paradigm still rules the roost after some forty years Some insight into the role of several of the players in this almost comical coming and going of theories involves the contributions of Lorentz Einstein de Sitter LeMaitre Eddington Freundlich Freidmann Hubble Born Heisenberg Bethe Gamow Hoyle Penzias Wickramasinghe Sagan and Thornhill HENDRICK LORENTZ Dutch physicist Hendrick Lorentz attempted an explanation that would counteract the Michelson-Morley interferometer results of the 1880’s. Those results consistently showed no movement of the Earth around the sun. Hendrick’s "solution" was to say that the Earth’s speed through the aether in space caused the interferometer arm that was pointed in the direction of the alleged orbit t o get shorter ! The Irish physicist FitzGerald had the same idea earlier and called it the "FitzGerald Contraction"...which turned out to be the "FitzGerald Expansion".... Eddingtonto his creditcompared these "solutions" with "...the adventures of Gulliver in Lilliputland and Alice’s adventures in Wonderland"

79. Einstein And Astronomer Willem De Sitter Translate this page Einstein y el astrónomo willem de sitter discutiendo sobre las ecuaciones queproporcionan el mejor lenguaje disponible para describir el universo visto http://www.einstein.unican.es/ae65.htm

Einstein y el astrónomo Willem de Sitter discutiendo sobre las ecuaciones que proporcionan el mejor lenguaje disponible para describir el universo visto como un todo. El cuanto y el cosmos II Contenido Inicio Brought to you by The Center for History of Physics American Institute of Physics Traducido al castellano por la sección local de Cantabria de la Real Sociedad Española de Física- Universidad de Cantabria

80. A Ritzian Interpretation Of Variable Stars In 1913 willem de sitter urged abandonment of the Ritz theory because binarystars (the interstellar medium scenario) failed to show the predicted c + v http://www.ebicom.net/~rsf1/binaries.htm

Home Up one level Previous Next This article has the following sections. A Ritzian Interpretation of Variable Stars - You are here! Non-pulsating Cepheid Variables Ritzian Gamma-Ray Bursts Ultra High Energy Cosmic Rays Modeling Geminga ... GRB 790731 and omega Geminorum A Ritzian Interpretation of Variable Stars An enlargement on 1987-1989 researches by V.I. Sekerin and M.S. Serbulenko Installed 05 Jan 1999 - Latest Update 12 December 2004 (Newly added or modified material is in bold.) Keywords: Close Binary Stars, Gamma-Ray Bursts, Spectroscopic Interpretation, Speed of Light An abbreviated version of this document, with recent historical updates and a special emphasis on Gamma-Ray Bursts, was presented as Gamma-Ray Bursts: Sans Second Postulate at the 35th COSPAR meeting in Paris on 19-21 July 2004. This article is written under the presumption that the constancy of the "measured" speed of light by all observers (in vacuo) is an unresolved issue. The author favors Ritz's use of c+v relativity but with the reservation that extinction (Tolman or Ewald-Oseen), i.e., the speed of light eventually reaches a terminal speed with respect to any given medium, has to be taken into account.

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