Born on 998 Died on 1061
An Egyptian physician, astrologer and astronomer, born in Jiza (ca. 998-ca. 1061). He was a commentator on Greek medicine, and in particular on Galen and Hippocrates. He is also known for his observation of the Supernova that appeared in the sky in 1006, which he mentioned in his commentary on Ptole...
Born on 1149 Died on 1209
Fakhr ad-Din ar-Razi was a philosopher and Muslim theologian.
Died on 1295
In the thirteenth century the military engineer Hasan al-Rammah (d. 695 AH/1295 AD) described in his book al-furusiyya wa al-manasib al-harbiyya (The Book of Military Horsemanship and Ingenious War Devices) the first process for the purification of potassium nitrate.