Qadi-zadeh Roumi

Qadi-zadeh Roumi (" wire of the judge anatolien" in Persan), of its true name Musa Salah AD-DIN Pasha ( Salah AD-DIN : integrity of the religion, mûsâ : Arab Brace in ), Mathematician and Astronomer (1364 with Bursa in Turkey - 1436 with Samarkand in Ouzbékistan).

The word Roumi comes from Arabic Roum ( rûm ), who indicated Rome initially, then Byzance, and finally the Anatolia, old Byzantine possession conquered by a branch of the Turkish dynasty of the Seldjoukides, called precisely Seldjoukides de Roum.

He was the pupil of the scientist Al-Fanari of Bassora (Iraq) which advised to him to supplement its scientific education with the Khorassan (with Hérat) and in Transoxiane (with Samarkand and Bukhara). He made the voyage only in 1407, after the death of Tamerlan.

It is with Samarkand that it met in 1410 the prince Oulough Beg, of which he became the professor and at which he developed the taste of sciences.

After the opening in 1420 of the Médersa of Oulough Beg, Qadi-zadeh Roumi taught there with another scientist, Al-Kachi, and probably Oulough Beg itself.

The three men found themselves associated with some 60 other scientists with creation and work with the observatory with Samarkand, inaugurated towards 1429. This work led to the publications of the Tables sultaniennes ( zij-E solTâni , into Persan), published in 1437 but improved by Oulough Beg until little before its death in 1449.

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