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)

エジプトの博学者（イラク出身）であり、幾何学と光学の研究が17世紀まで影響を与えた人物。物理学において実験を証明の基準として確立した（1040年没）