Al-Nayrizi

'''Abū’l-'Abbās al-Faḍl ibn Ḥātim al-Nairīzī''' (; ; , ) was a Persian mathematician and astronomer from Nayriz, now in Fars province, Iran.

==Life== Little is known of al-Nairīzī, though his nisba refers to the town of Neyriz. He mentioned al-Mu'tadid, the Abbasid caliph, in his works, and so scholars have assumed that al-Nairīzī flourished in Baghdad during this period. Al-Nairīzī wrote a book for al-Mu'tadid on atmospheric phenomena. He died in .