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About: Al-Kharaqī     Goto   Sponge   Distinct   Permalink

An Entity of Type : yago:WikicatPersianMathematicians, within Data Space : dbpedia.org associated with source document(s)

Type: Thingpersonyago:WikicatAstronomersOfMedievalIslamyago:WikicatMedievalPersianAstronomersyago:WikicatMuslimAstrologersyago:Astrologer109817816yago:Astronomer109818343yago:CausalAgent100007347yago:Forecaster110102506yago:Intellectual109621545yago:LivingThing100004258yago:Mathematician110301261yago:Object100002684yago:Organism100004475yago:Person100007846yago:PhysicalEntity100001930yago:Physicist110428004yago:WikicatIranianAstronomersyago:YagoLegalActoryago:YagoLegalActorGeoyago:Scientist110560637yago:Visionary110756433yago:Whole100003553yago:Wikicat12th-centuryAstronomersyago:WikicatPersianMathematicians New Facet based on Instances of this Class

Abū Muḥammad 'Abd al-Jabbār al-Kharaqī, also Al-Kharaqī (1084-1158) was a Persian astronomer and mathematician of the 12th century, born in Kharaq near Merv. He was in the service of Sultan Sanjar at the Persian Court. Al-Kharaqī challenged the astronomical theory of Ptolemy in the Almagest, and established an alternative theory of the spheres, imagining huge material spheres in which the planets moved inside tubes.