| The Making of Humanity, p | Golden Age of Persia, , pp |
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| "Early Arabic Critique of Ptolemaic Cosmology: A Ninth-Century Text on the Motion of the Celestial Spheres", Journal for the History of Astronomy 25, p | Islam and The Origins of Modern Science, p |
In the Book on the motion of the orbs, he was the first to discover that the and were subject to the same as , unlike the ancients who believed that the celestial spheres followed their own set of physical laws different from that of Earth.
10| , Episode 12: Machines of the East, , , retrieved on 2008-09-06• October 1967 , "The Museum of Music: A History of Mechanical Instruments", Music Educators Journal 54 2 : 45—49, :• ; Charles Burnett 1998 in Bulletin of the School of Oriental and African Studies, University of London 61 2 p | |
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