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[[File:Ali_ibn_Ridwan_(Nikolaikirche_Stralsund).jpg]]Ali ibn Ridwan (Nikolaikirche Stralsund)|thumb]] '''Ali ibn Ridwan''' (c. 988 – c. 1061), also known as '''Haly Abenrudian''' in medieval Europe, was an Egyptian [[physician]], [[astrologer]], and [[astronomer]] who made significant contributions to the fields of medicine and astrology during the Islamic Golden Age. He is best known for his commentary on [[Galen]]'s work and for his observations of a supernova in 1006, which is considered one of the earliest recorded observations of a supernova in human history.

==Biography==
Ali ibn Ridwan was born in [[Giza]], near [[Cairo]], in a family of physicians. His father was a well-respected physician, which allowed Ali to receive an excellent education in various fields, including medicine, astrology, and astronomy. He spent most of his life in Egypt, where he practiced medicine and conducted his astronomical observations.

==Contributions to Medicine==
Ibn Ridwan is most renowned for his contributions to medicine, particularly for his commentary on Galen's medical texts. His work was not merely a translation but an expansion, providing his own insights and observations. This commentary was widely used in the [[Islamic world]] and later in medieval Europe, influencing the development of medicine.

In addition to his commentaries, he wrote several original works on medicine, including treatises on [[epidemics]] and the benefits of avoiding overeating and excessive drinking. His approach to medicine was holistic, emphasizing the importance of diet and lifestyle in maintaining health.

==Astronomical Observations==
Ibn Ridwan is also remembered for his observation of the supernova SN 1006, which he described in detail. His account of the supernova, which he interpreted as a transient celestial event, provides valuable data for modern astronomers studying the history of supernovae. His observations were made in Cairo and are among the most detailed from this period.

==Astrology==
As an astrologer, Ali ibn Ridwan believed in the influence of the stars on human health and world events. He wrote extensively on the subject, integrating his astrological beliefs with his medical practices. His works on astrology were also translated into Latin and were influential in Europe.

==Legacy==
Ali ibn Ridwan's contributions to medicine, astronomy, and astrology were significant in the Islamic Golden Age and had a lasting impact on the development of these fields in both the Islamic world and medieval Europe. His works continued to be studied and respected long after his death, reflecting his enduring legacy as a scholar and scientist.

==See Also==
* [[Islamic Golden Age]]
* [[Galen]]
* [[History of astronomy]]
* [[History of astrology]]
* [[History of medicine]]

[[Category:Egyptian physicians]]
[[Category:Medieval astronomers]]
[[Category:Medieval astrologers]]
[[Category:People from Cairo]]
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Ali ibn Ridwan - Revision history

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