Al-Bi?r

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Al-Bi?r?j? Al-Ishb?l?, Ab? Is??q

also known as Alpetragius

(his surname probably derives from Pedroche, Spain, near Cordoba; fl. Seville, ca. 1190)

astronomy, natural philosophy.

Al-Bi?r?j?’s only extant work is De motibus celorum, originally written in Arabic. He was a contemporary of Ibn Rushd (Averroës), and his astronomical system aroused much interest among such Chiristan natural philosophers as Albertus Magnus, Robert Grosseteste, and Roger Bacon. For a detailed study of his life and work, see Supplement.

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