Ali ibn Isa al-Asturlabi
Template:Short description Script error: No such module "Other people". Script error: No such module "Distinguish". Template:Use British English Script error: No such module "Template wrapper".Script error: No such module "Check for clobbered parameters". ʿAlī ibn ʿĪsā al-Asṭurlābī (Template:Langx, 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.Template:Sfn Differing reports state that they obtained a result of Script error: No such module "convert"., 56 and two-thirds, or 56 and one-quarter miles per degree.Template:Sfn
References
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Sources
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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.