Ibn al-Shatir - Muslim Scientist - Astrolabic Clock - By Dr. Moiz
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متل الابن الشاطر
ʿAlāʾ al‐Dīn ʿAlī ibn Ibrāhīm known as Ibn al-Shatir or Ibn ash-Shatir was an Arab astronomer, mathematician and engineer. He worked as muwaqqit in the Umayyad Mosque in Damascus and constructed a sundial for its minaret in 1371/72.