• Source: Ali ibn Isa al-Asturlabi

ʿAlī ibn ʿĪsā al-Asṭurlābī (Arabic: علي بن عيسى, fl. 832) was a 9th century Arab geographer and astronomer. He wrote a treatise on the astrolabe and was an opponent of astrology. During the reign of al-Ma'mun, and together with Khālid ibn ʿAbd al-Malik al-Marwarrūdhī, he participated in an expedition to the Plain of Sinjar to measure the length of a degree. Differing reports state that they obtained a result of 56 miles (90 km), 56 and two-thirds, or 56 and one-quarter miles per degree.




References






Sources


Bolt, Marvin (2007). "ʿAlī ibn ʿĪsā al-Asṭurlābī". In Hockey, Thomas; et al. (eds.). Biographical Encyclopedia of Astronomers. Springer Publishers.
Mercier, Raymond (2008). "Geodesy". In Selin, Helaine (ed.). Encyclopaedia of the History of Science, Technology, and Medicine in Non-Western Cultures. Vol. 1 (2nd ed.). Berlin: Springer Nature. ISBN 978-14020-4-559-2.




Further reading


ʿAlī ibn ʿĪsā al-Asṭurlābī, Kitāb al-ʿamal bi-l-asṭurlāb , ed. by P. Louis Cheikho : "'Kitāb al-ʿamal bi-l-asṭurlāb li-ʿAlī ibn ʿĪsā", in: al-Mashriq 16 (1913), pp. 29–46; transl. German by Carl Schoy, "ʿAlī ibn ʿĪsā, Das Astrolab und sein Gebrauch", in: Isis 9 (1927), pp. 239–254.

Kata Kunci Pencarian:

• Isa (nama)
• Ali ibn Isa al-Asturlabi
• Khalid ibn Abd al-Malik al-Marwarrudhi
• Ali ibn Isa
• Isa (name)
• 827
• Abu Ali al-Khayyat
• Abu Mansur Muwaffaq
• Al-Zahrawi
• 820s
• Zakariya al-Qazwini