Ibn al satir biography of mahatma gandhi
Ibn al-ShatirArab astronomer and clockmaker (13041375)ʿAbu al-Ḥasan Alāʾ alDīn bin Alī bin Ibrāhīm bin Muhammad bin al-Matam al-Ansari,91;193; known as Ibn al-Shatir or Ibn ash-Shatir (Arabic: ابن الشاطر; 13041375) was an Arab astronomer, mathematician and engineer. He worked as muwaqqit (موقت, timekeeper) in the Umayyad Mosque in Damascus and constructed a sundial for its minaret in 137172.