Ibn al-Haytham - Definitions from Dictionary.com

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ibn al-haytham
noun
an Egyptian polymath (born in Iraq) whose research in geometry and optics was influential into the 17th century; established experiments as the norm of proof in physics (died in 1040) [syn: Alhazen]

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Ibn al-Haytham

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The American Heritage Science Dictionary - Cite This Source - Share This

Ibn al-Haytham (ĭb'ən ěl-hī'thəm), Abu 'Ali al-Hasan Also known as Alhazen Audio Help (ĭb'ən ěl-hī'thəm) Pronunciation Key
Arab mathematician who wrote almost 100 works on mathematics, astronomy, philosophy, and medicine, but who is best known for his book on optics, which became very influential in Europe after it was translated in the 13th 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.

The American Heritage® Science Dictionary
Copyright © 2002 by Houghton Mifflin Company.
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