Nasir al-Din al-Tusi (1201-1274) was a prominent Persian polymath and a prominent figure in the Islamic Golden Age. He was a philosopher, theologian, astronomer, physician, and logician, and made significant contributions to the fields of mathematics and physics. He was also a skilled engineer and designed a number of astronomical instruments.
He also wrote many books on various subjects such as logic, mathematics, astronomy, medicine, and ethics. One of his most famous works is “Tadhkirat al-Awliya” (The Memoirs of the Saints), which is a biographical dictionary of Muslim saints and mystics. He was also a prominent figure in the Ilkhanate court and served as a court astronomer and advisor to the Mongol ruler Hulagu Khan.
In addition, Al-Tusi made important contributions to the development of trigonometry and the astronomical system known as the Tusi-couple. He also developed a new planetary model that improved upon the Ptolemaic system.
