तिथि 2008-10-14 Rashed, Roshdi (2007), "The Celestial Kinematics of Ibnal-Haytham", Arabic Sciences and Philosophy, Cambridge University Press, 17 (01):
recognized the concept of "psychotherapy" and referred to it as al-‘ilaj al-nafs. 1021 - Ibnal-Haytham (Alhazen) began to carry out experiments in areas related