Ghiyath al-Din Jamshid

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Jamshid Ibn Mas’oud Kashani, celebrated astronomer and mathematician (1387 – 1429), from Kashan. His father was a physician. He wrote in Persian and in Arabic. Ghiyath al-Din gives a description of the tests undergone by poets when they were admitted to the sovereign’s court. He also assisted in the establishment of Ulugh Beg’s (Timurid ruler in Samarqand; b. 1933, ruled. 1447 – 1449) astronomical tables, and established the value of pi with extraordinary exactitude.
####Works:
1- Khaghani astronomical table
2- Tasilat astronomical table
3- Treatises “Chord” and “Sine” (on mathematics and geometry)
4- The dimensions and bodies
5- Treatise “Circumference”
6- Treatise on “the dimensions of the earth and the stars”, etc.
His books and astronomical tables are kept in the famous libraries in the world.

Sources

Dehkhoda dictionary

Farsi encyclopedia

Keywords


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