Mu'ayyad al-Din al-Urdi
Arab astronomer
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Why Is Mu'ayyad al-Din al-Urdi Influential?
(Suggest an Edit or Addition)According to Wikipedia, Al-Urdi was a medieval Syrian Arab astronomer and geometer. Born circa 1200, presumably in the village of ʿUrḍ in the Syrian desert between Palmyra and Resafa, he came to Damascus at some point before 1239, where he worked as an engineer and teacher of geometry, and built instruments for al-Malik al-Mansur of Hims. In 1259 he moved to Maragha in northwestern Iran, after being asked by Nasir al-Din al-Tusi to help establish the Maragha observatory under the patronage of Hulagu. Al-Urdi's most notable works are Risālat al-Raṣd, a treatise on observational instruments, and Kitāb al-Hayʾa , a work on theoretical astronomy. His influence can be seen on Bar Hebraeus and Qutb al-Din al-Shirazi, in addition to being quoted by Ibn al-Shatir.
