Ibn Al Haitham

Ibn AL Haitham also known in the Arab world as Alhazen, he was born in 965 in Basra and died in 1040 in Cairo. Ibn Al Haitham was a Muslim mathematician, philosopher, scientists, astronomer and polymath. Ibn Al Haitham made important contributions to the principles of astronomy, optics, scientific method and visual perception. Ibn Al Haitham was the first medical scholar to teach that light “does not originates from the eye but on opposite enters the eye”, which he corrected the Greeks opinion about the nature of the eye. According to Ibn Al Haitham the retina is in the center of the vision and it receives impressions that it transfers to the brain by the optical nerve, for the brain to create visual images for the symmetrical relationship between the retinas. Rosanna Gorini commented on the introduction of the scientific method that Ibn Al Haitham “According to the majority of the historians al-Haitham was the pioneer of the modern scientific method. With his book he changed the meaning of the term optics and established experiments as the norm of proof in the field. His investigations are based not on abstract theories, but on experimental evidences and his experiments were systematic and repeatable”. Roshdi Rashed also wrote about Ibn Al Haitham “His work on optics, which includes a theory of vision and a theory of light, is considered by many to be his most important contribution, setting the scene for developments well into the seventeenth century. His contributions to geometry and number theory go well beyond the archimedean tradition. And by promoting the use of experiments in scientific research, al-Haytham played an important part in setting the scene for modern science”.