Muḥammad ibn Muḥammad ibn al-Ḥasan al-Ṭūsī, also known as Naṣīr al-Dīn al-Ṭūsī or simply as Tusi, was a Persian polymath, architect, philosopher, physician, scientist, and theologian. Nasir al-Din al-
Iranian stamp for the 700th anniversary of his death
A Treatise on the Astrolabe by Tusi, Isfahan 1505
Tusi couple from Vat. Arabic ms 319
The Astronomical Observatory of Nasir al-Dīn Tusi.