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#REDIRECT [[Al-Battani]] |
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[[sl:Albatani]] |
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'''Al-Batani''', also know as '''Albategnius''' (circa [[850]] - [[929]]), was an [[Arab]] prince and [[astronomer]]. His full name is ''Abu Abdallah'' |
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''Mohammad ibn Jabir ibn Sinan al-Raqqi al-Harrani al-Sabi al-Battani'', hence the usual shortening. His name derives from his native town, Batan in [[Mesopotamia]]. |
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From his observations at [[Aracte]] and [[Damascus]], where he died, he was able to correct some of [[Ptolemy]]'s results, previously taken on trust. He compiled new tables of the [[Sun]] and [[Moon]], long accepted as authoritative, discovered the movement of the Sun's [[apogee]], and assigned to annual [[precession]] the improved value of 55". Perhaps independently of [[Aryabhatta]] (born at [[Pataliputra]] on the [[Ganges]] in [[476]] AD), he introduced the use of [[sine]]s in calculation, and partially that of [[tangent]]s. |
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His principal work, ''De Motu Stellarum,'' was published at [[Nuremberg]] in [[1537]] by [[Melanchthon]], in a blundering [[Latin language|Latin]] translation by [[Plato Tiburtinus]], annotated by [[Regiomontanus]]. A reprint appeared at [[Bologna]] in [[1645]]. The original manuscript is preserved at the [[Vatican]]; and the [[Escorial Library]] possesses in manuscript a treatise of some value by him on astronomical chronology. |
Latest revision as of 22:24, 26 November 2014
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