998 - 1061

Physician, Astrology, Astronomy

 

Abu-l-Hasan Ali ibn Radwan ibn Ali ibn Ja'far al-Misri. The author of many medical writings of which the most popular was his commentary on Galen'a Ars prava, which was translated by Gerardo Cremonese. I may still quote his treatise on hygiene with special reference to Egypt (fi daf mudar al-abdan bi-ard Misr). He wrote various other commentaries on Hippoctates and Galen and on Ptolemy's astrological books.

e was a commentator on Greek medicine, and in particular on Galen; his commentary on Galen's Ars Parva was translated by Gerardo Cremonese. He is also known for his supernova observation from 1006. This was written in a commentary on Ptolemy's work Tetrabiblos.

He was later cited by European authors as Haly, or Haly Abenrudian. According to A. C. Crombie (Augustine to Galileo 2, p. 25) he also contributed to the theory of induction. He engaged in a celebrated polemic against another physician, ibn Butlan of Baghdad.