1. 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)
   - Alhacen, al-Haytham, Ibn al-Haytham, Al-Hasan ibn al-Haytham

Type of: astronomer, mathematician, physicist, stargazer [informal], uranologist

Encyclopedia: Alhazen