Fatimid Caliphate
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Ali ibn Ridwan
Giza, Fatimid Caliphate
Archival Overview
Self-taught Egyptian polymath and Chief Royal Physician of the Fatimid Caliphate, renowned for his detailed astronomical recording of the supernova SN 1006 and his commentary on Galen.
Biographical Record
Ali ibn Ridwan (988–1061 CE) was born in Giza to a humble baker and financed his education through astrology and street medicine before rising by sheer genius to become Chief Physician to the Fatimid Caliphs in Cairo. A fierce advocate of self-directed empirical study, he authored Kitab Kifayat al-Tabib, emphasizing medical ethics and hygiene.
In 1006 CE, Ibn Ridwan recorded history's most precise and scientifically detailed observation of Supernova SN 1006, the brightest stellar event in recorded human history. He calculated its position, luminosity (three times brighter than Venus), and atmospheric distortion, data utilized a millennium later by modern NASA astrophysicists. He also authored a pioneering treatise on environmental epidemiology in Egypt.
Key Life Milestones
Scientific Observation of Supernova SN 1006
Recorded the coordinates and luminosity of the brightest supernova in human history, utilized by modern NASA scientists.
Treatise on Egyptian Environmental Medicine
Authored the first epidemiological study correlating climate, water stagnation in the Nile, and endemic disease in Cairo.
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Final Resting Place
Perpetual MemorialCairo, Egypt