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Post-Abbasid Scholars, 12pm section, Group 1 - Coggle Diagram

- - - - Astronomy
        
        He became the director of the new observatory (until his death) and with its help, made important contributions both in observation such as describing the Milky Way and in theory
        
        Famously known for convincing Hulagu Khan to build an observatory (The Maragha observatory) for improved astrological observations
      - Mathematics
      - Physics
      - Chemistry
      - Philosophy
      - Isma'ili theology
- - - - He also made a good explication of the nature of colours beyond what Ibn al-Haytham had reached
      - Made important contributions in numbers theory and optics
    - - He introduced a major new approach based on factorization and combinatorial methods in his work that is considered as his main contributions to number theory
      - The process of revision allowed him to produce the first mathematically correct explanation of the rainbow
- - - - Astronomy
        
        In Astronomy his most important accomplishment was : Nehayat al-Idrak fi Dirayat al-Aflak (The Limit
        of Accomplishment Concerning Knowledge of the Heavens) and and Al-
        Tuhfah al-Shahiya (The Royal Present) improved on ptolemy's principles
      - Medicine
        
        A student of Nasir al-Din al-Tusi, he reviewed and revised a number of topics with him, including
        the essential medical canon of Ibn Sina.
      - Poet
      - Mathematics
      - Physics
      - Philosophy
- - - - Used the progress made by tusi and maragha school of astronomy to drastically reform the ptolemaic models of sun,moon and planets.
        
        Historians have found that his models of planetary orbits , particularly for the moon, mercury and venus, are quite identical to those of copernicus.
      - Worked as the Muwaqqit of the Great Ummayad Mosque
        of Damascus.
- - - - His greatest contribution perhaps
        was building the Samarkand observatory (between 1424 and 1429) which hosted the famous huge Fakhri sextant, which had a radius of
        about 36 meters.
        
        He used this to produce his greatest work in 1437 Zij-i-Sultani,one of the greatest star catalogues of pre-modern
        times.
- - - - Contributed to Ulugh Beg's Zij-i-Sultani at Samarkand and later improved on Nasir-al din al-Tusi's planetary model. Presenting an alternate model for Mercury.
      - A disciple of Ulug Beg, who was known for relating astronomy on a physical rather than philosophical basis, and partly for attempting to answer for the rotation of the earth and provide evidence for it,
- - - - He represents the culmination of maragha school of astronomy (Tusi, Shirazi, Qushj) continuing and better succeeding in attempt to find more physically geometric planetary models.
      - Considered by Saliba to be "One of the most competent of all mathematical astronomers and planetary theorists of medical islam.. and perhaps the most competent of all of them"