Al-Nayrizi
Mathematician, Astronomer, Neyriz, Fars Province, Al-Mu'tadid
978-613-6-65197-2
6136651971
64
2011-08-15
29.00 €
eng
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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Abū’l-‘Abbās al-Faḍl ibn Ḥātim al-Nairīzī , 865–922 was a 9th-10th century Persian mathematician and astronomer from Nayriz, Fars, Iran. He flourished under al-Mu'tadid, Caliph from 892 to 902, and compiled astronomical tables, writing a book for al-Mu'tadid on atmospheric phenomena. Nayrizi wrote commentaries on Ptolemy and Euclid. The latter were translated by Gerard of Cremona. Nairizi used the so-called umbra (versa), the equivalent to the tangent, as a genuine trigonometric line (but he was anticipated in this by al-Marwazi). He wrote a treatise on the spherical astrolabe, which is very elaborate and seems to be the best Persian work on the subject. It is divided into four books.
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