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2 de may. de 2024 · Al-Farghani, from the Tigris to the Nile. Commissioned by a Caliph, Al-Farghani made a long journey, from his home in present-day Uzbekistan, through Iraq and finally to Egypt to add his extensive ...
30 de abr. de 2024 · Al-Farghani is one of the most important scientists of the Islamic world in the Middle Ages. His full name is Abu'l-Abbas Ahmed ibn Yahya ibn Jâbir ibn Sinan al-Farghani . He lived approximately in the first half of the 9th century.
9 de may. de 2024 · Er war Astronom und Ingenieur am Kalifenhof in Bagdad und später in Ägypten, wo er die Arbeiten am Nilometer von Roda leitete. Im Auftrag seines Kalifen führte Farghani eine Berechnung des Erdumfangs durch. Um 2° des Erdumfangs zu ermitteln, ließ er die Diener des Kalifen 224 km Wüste per Hand vermessen. Er konnte damit den Erdumfang mit ...
Hace 2 días · Use of the astrolabe is best expressed in Al-Farghani's treatise on the astrolabe due to the mathematical way he applied the instrument to astrology, astronomy, and timekeeping. The earliest known Astrolabe in existence today comes from the Islamic period. It was made by Nastulus in 927-28 AD and is now a treasure of the Kuwait National Museum.
Hace 4 días · Around 833, al-Farghani (died after 861) wrote Elements of Astronomy on the Motions of the Celestial Bodies. He was better known in the West as Alfraganus. This textbook mostly talked about Ptolemy’s Almagest without using math. It was updated with new numbers from Islamic astronomers who came before.
Hace 1 día · Rukyah of the crescent is a method used to determine the beginning and end of the Hijrah month. With the development of astronomy, many people in the community began to specialist in astronomy, including women.
Hace 2 días · Alpha Centauri ( α Centauri, α Cen, or Alpha Cen) is a triple star system in the southern constellation of Centaurus. It consists of three stars: Rigil Kentaurus ( α Centauri A ), Toliman ( α Centauri B ), and Proxima Centauri ( α Centauri C ). [13] Proxima Centauri is the closest star to the Sun at 4.2465 light-years (1.3020 pc ).
