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Matches in DBpedia 2014 for { <http://dbpedia.org/resource/Jan_Oort> ?p ?o. }

• Jan_Oort abstract "Jan Hendrik Oort ForMemRS (28 April 1900 – 5 November 1992) was a prolific Dutch astronomer. He made many important contributions in the field of astronomy and was a pioneer in the field of radio astronomy. In 1932 he became the first person to discover evidence of dark matter. First proposed by Swiss astronomer Fritz Zwicky in the 1930s, at nearly the same time, Jan Oort in the Netherlands discovered that the density of matter near the Sun was nearly twice what could be explained by the presence of stars and gas alone. The Oort cloud of comets bears his name. Oort was born in Franeker, Friesland, and studied in Groningen with Jacobus Cornelius Kapteyn. His Ph.D thesis was titled The stars of high velocity. In 1927 he confirmed Bertil Lindblad's theory that the Milky Way galaxy rotates, by analyzing the movements of stars. In 1935 he became professor at the observatory of the University of Leiden, where Ejnar Hertzsprung was the director. Oort was fascinated by radio waves from the universe. After the Second World War he began work in the new field of radio astronomy, using an old radar antenna from the Germans.In the 1950s, he raised funds for a new radio telescope in Dwingeloo, in the east part of the Netherlands, to research the centre of the galaxy. In 1970 a bigger telescope (the Westerbork Synthesis Radio Telescope) was built in Westerbork, near the old one. It consisted of twelve smaller telescopes working together to perform radio interferometry observations, a technique which had been previously suggested by Oort, but which was first tested experimentally in Cambridge by Martin Ryle and in Sydney by Joseph Pawsey.His son Coen Oort, born in 1928, later became an important Dutch economist and public official who in 1990 headed the Oort Commission, which was responsible for a major overhaul of Dutch tax law.".
• Jan_Oort birthDate "1900-04-28".
• Jan_Oort birthPlace Franeker.
• Jan_Oort birthPlace Friesland.
• Jan_Oort birthYear "1900".
• Jan_Oort deathDate "1992-11-05".
• Jan_Oort deathPlace Leiden.
• Jan_Oort deathPlace South_Holland.
• Jan_Oort deathYear "1992".
• Jan_Oort doctoralAdvisor Jacobus_Kapteyn.
• Jan_Oort field Astronomy.
• Jan_Oort knownFor Oort_cloud.
• Jan_Oort nationality Netherlands.
• Jan_Oort thumbnail JanOort.jpg?width=300.
• Jan_Oort viafId "92318435".
• Jan_Oort wikiPageExternalLink inhoud.htm.
• Jan_Oort wikiPageID "413430".
• Jan_Oort wikiPageRevisionID "605293145".
• Jan_Oort birthDate "1900-04-28".
• Jan_Oort birthPlace Franeker.
• Jan_Oort birthPlace Friesland.
• Jan_Oort by "yes".
• Jan_Oort dateOfBirth "1900-04-28".
• Jan_Oort dateOfDeath "1992-11-05".
• Jan_Oort deathDate "1992-11-05".
• Jan_Oort deathPlace Leiden.
• Jan_Oort deathPlace South_Holland.
• Jan_Oort doctoralAdvisor Jacobus_Kapteyn.
• Jan_Oort field Astronomy.
• Jan_Oort hasPhotoCollection Jan_Oort.
• Jan_Oort id "112244".
• Jan_Oort knownFor Oort_cloud.
• Jan_Oort name "Jan Oort".
• Jan_Oort name "Oort, Jan".
• Jan_Oort nationality Netherlands.
• Jan_Oort onlinebooks "yes".
• Jan_Oort placeOfBirth Franeker.
• Jan_Oort placeOfBirth Friesland.
• Jan_Oort placeOfDeath Leiden.
• Jan_Oort shortDescription "Dutch astronomer".
• Jan_Oort title "Jan Hendrik Oort".
• Jan_Oort viaf "92318435".
• Jan_Oort wordnet_type synset-scientist-noun-1.
• Jan_Oort description "Dutch astronomer".
• Jan_Oort description "Dutch astronomer".
• Jan_Oort subject Category:1900_births.
• Jan_Oort subject Category:1992_deaths.
• Jan_Oort subject Category:20th-century_astronomers.
• Jan_Oort subject Category:Dutch_astronomers.
• Jan_Oort subject Category:Foreign_Members_of_the_Royal_Society.
• Jan_Oort subject Category:Foreign_Members_of_the_Russian_Academy_of_Sciences.
• Jan_Oort subject Category:Foreign_Members_of_the_USSR_Academy_of_Sciences.
• Jan_Oort subject Category:Leiden_University_faculty.
• Jan_Oort subject Category:People_from_Franekeradeel.
• Jan_Oort subject Category:Recipients_of_the_Gold_Medal_of_the_Royal_Astronomical_Society.
• Jan_Oort subject Category:University_of_Groningen_alumni.
• Jan_Oort type 20th-centuryAstronomers.
• Jan_Oort type Astronomer109818343.
• Jan_Oort type CausalAgent100007347.
• Jan_Oort type DutchAstronomers.
• Jan_Oort type LivingThing100004258.
• Jan_Oort type Object100002684.
• Jan_Oort type Organism100004475.
• Jan_Oort type PeopleFromFranekeradeel.
• Jan_Oort type Person100007846.
• Jan_Oort type PhysicalEntity100001930.
• Jan_Oort type Physicist110428004.
• Jan_Oort type Scientist110560637.
• Jan_Oort type Whole100003553.
• Jan_Oort type YagoLegalActor.
• Jan_Oort type YagoLegalActorGeo.
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• Jan_Oort type Scientist.
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• Jan_Oort type Scientist.
• Jan_Oort type Q215627.
• Jan_Oort type Q5.
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• Jan_Oort comment "Jan Hendrik Oort ForMemRS (28 April 1900 – 5 November 1992) was a prolific Dutch astronomer. He made many important contributions in the field of astronomy and was a pioneer in the field of radio astronomy. In 1932 he became the first person to discover evidence of dark matter.".
• Jan_Oort label "Jan Hendrik Oort".
• Jan_Oort label "Jan Hendrik Oort".
• Jan_Oort label "Jan Hendrik Oort".
• Jan_Oort label "Jan Oort".
• Jan_Oort label "Jan Oort".
• Jan_Oort label "Jan Oort".
• Jan_Oort label "Jan Oort".
• Jan_Oort label "Jan Oort".
• Jan_Oort label "Оорт, Ян Хендрик".
• Jan_Oort label "ヤン・オールト".
• Jan_Oort label "扬·奥尔特".
• Jan_Oort sameAs Jan_Oort.
• Jan_Oort sameAs Jan_Hendrik_Oort.
• Jan_Oort sameAs Γιαν_Όορτ.
• Jan_Oort sameAs Jan_Hendrik_Oort.
• Jan_Oort sameAs Jan_Hendrik_Oort.

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