Before revision: Starting in the early ninth century, early Muslim scientists such al-Kindi (801–873) and the authors writing under the name of Jābir ibn Hayyān (writings dated to c. 850–950) started to put a greater emphasis on the use of experiment as a source of knowledge.Plinio Prioreschi, "Al-Kindi, A Precursor of the Scientific Revolution" , Journal of the International Society for the History of Islamic Medicine, 2002 (2): 17–20 [17].
After revision: Starting in the early ninth century, early Muslim scientists such al-Kindi (801–873) and the authors writing under the name of Jābir ibn Hayyān (writings dated to c. 850–950) beganas to put a greater emphasis on the use of experiment as a source of knowledge.Plinio Prioreschi, "Al-Kindi, A Precursor of the Scientific Revolution" , Journal of the International Society for the History of Islamic Medicine, 2002 (2): 17–20 [17].