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1 day ago · Under Ulugh Beg, Samarkand became one of the world centers of medieval science. In the first half of the 15th century, a whole scientific school arose around Ulugh Beg, uniting prominent astronomers and mathematicians including Jamshid al-Kashi , Qāḍī Zāda al-Rūmī , and Ali Qushji .
3 days ago · Ulugh Beg, himself a great scientist, began to build the city into a great cultural centre. It was to Ulugh Beg that Kashani dedicated his important book of astronomical tables Khaqani Zij which was based on the tables of Nasir al-Tusi.
1 day ago · Aiteke Bi received a well-rounded education for his time. From the age of five, he was mentored by renowned bis around the household of his grandfather, Zhalantos. He later studied at the prestigious Ulugh Beg madrasah, where he mastered several languages, including Arabic, Persian, and Turkic.
5 days ago · Zīj (astronomical tables) of Ulugh Beg, 1394-1449 (a Persian astronomer), in Arabic and Ottoman Turkish, presented to the Sultan ʻAbd al-Ḥamīd Khān ibn Aḥmad Khān (Abdülhamid I Sultan of the Turks, 1725-1789), in 1193 Hijrī (1779 or 1780).
4 days ago · Ḥasan Ibn al-Haytham (Latinized as Alhazen; / ælˈhæzən /; full name Abū ʿAlī al-Ḥasan ibn al-Ḥasan ibn al-Haytham أبو علي، الحسن بن الحسن بن الهيثم; c. 965 – c. 1040) was a medieval mathematician, astronomer, and physicist of the Islamic Golden Age from present-day Iraq. [6][7][8][9] Referred to as "the father of modern optics", [10][11][12] he ...
18 hours ago · Betelgeuse and its red coloration have been noted since antiquity; the classical astronomer Ptolemy described its color as ὑπόκιρρος (hypókirrhos = more or less orange-tawny), a term later described by a translator of Ulugh Beg's Zij-i Sultani as rubedo, Latin for "ruddiness".
3 days ago · General relativity (GR) theory modifications include different scalar, vector, and tensor fields with non-minimal gravitational coupling. Kalb–Ramond (KR) gravity is a modified theory formulated based on the presence of the bosonic field. One astrophysical way to test gravity is by studying the motion of test particles in the spacetime of black holes (BHs) using observational data. In the present work, we aimed to test KR gravity through theoretical studies of epicyclic frequencies of ...
