Ali Qushji
Ottoman astronomer and mathematician · Turkey · Scientists · Lived 1403 to 1474 · aged 71
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A typical day, 30 days to 21 October 2026
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Something wrong?Ala al-Dīn Ali ibn Muhammed, Persian: علاءالدین علی بن محمد سمرقندی known as Ali Qushji was a Timurid theologian, jurist, astronomer, mathematician and physicist, who settled in the Ottoman Empire some time before 1472.
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About this person
Ala al-Dīn Ali ibn Muhammed, Persian: علاءالدین علی بن محمد سمرقندی known as Ali Qushji was a Timurid theologian, jurist, astronomer, mathematician and physicist, who settled in the Ottoman Empire some time before 1472. As a disciple of Ulugh Beg, he is best known for the development of astronomical physics independent from natural philosophy, and for providing empirical evidence for the Earth's rotation in his treatise, Concerning the Supposed Dependence of Astronomy upon Philosophy. In addition to his contributions to Ulugh Beg's famous work Zij-i-Sultani and to the founding of Sahn-ı Seman Medrese, one of the first centers for the study of various traditional Islamic sciences in the Ottoman Empire, Ali Kuşçu was also the author of several scientific works and textbooks on astronomy.
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