Abstract
Abū ‘Alī al-Hasan ibn al-Hasan ibn al-Haytham is also known as Alhacen or Alhazen was a Muslim scientist and a mathematician. He was born and educated in Basra in Iraq (circa 965) but spent some time in Cairo, Egypt until he died at the age of 76. When he was there, the ruler Al-Hakimi bi-Amr Allah ordered Al Haytham to regulate the scourge of the Nile, but unfortunately the complexity of the job and the necessary technology were beyond him, and led him to feign madness in fear of the ruler’s wrath. As a result, he was put under house arrest but that period of confi nement led him to produce his most monumental work on optics, Kitab al-Manazir or the Book of Optics.
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