Ibn al-Haytham was the major figure in the study of optics and vision in the Middle Ages and his influence was pervasive for over 500 years. In this article, Professor Charles G. Gross, a renowned neurophysiologist of vision, outlines his original theory of vision and describes aspects which are less well known, namely Ibn al-Haytham's insights into visual physiology and visual perception. Professor Gross concludes that, although Ibn al-Haytham's unique synthesis of physics, mathematics and physiology into a new theory of vision and its historical importance have been recognized, his insights into the psychology of perception and their influence remains an important and potentially fertile area of research.
Ibn Al-Haytham on Eye and Brain, Vision and Perception
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Figure 1. The Tabula Rogeriana, drawn by al-Idrisi for Roger II of Sicily in 1154, one of the most advanced ancient world maps. Modern consolidation, created from the 70 double-page spreads of the original atlas. (Source)
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