Ibn al-Haytham(redirected from Halazen)
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Ibn al-Hay·tham(ĭb′ən ĕl-hī′thəm) Full name Abu Ali al-Hasan Ibn al-Haytham. Also known as Al·haz·en (ăl-hăz′ən) 965?-1040?
Arab mathematician and astronomer best known for his book on optics, which presented experimental studies of reflection and refraction and an influential theory of vision that revised that of the Greeks.
Ibn al-Hay·tham(ĭb′ən ĕl-hī′thəm) Latin name Al·haz·en (ăl-hăz′ən) 965?-1040?
Arab mathematician who is best known for his book on optics, which became very influential in Europe after it was translated in the 12th century. It contained a detailed description of the eye and disproved the older Greek idea that vision is the result of the eye sending out rays to the object being looked at.