Document Type

Book Chapter

Publication Date

4-25-2025

Keywords

Book of Optics, celestial physics, Euclid, Ptolemy

Disciplines

Astrophysics and Astronomy | Developmental Psychology

Abstract

Abū ʿAlī al-Ḥasan ibn al-Ḥasan ibn al-Haytham was an Arab Muslim born around 965 CE and died circa 1040 CE in current-day Iraq.  A scientist, astronomer, philosopher, and mathematician, he is particularly known for his work in astronomy, mathematics, visual perception, and optics.  In medieval Europe, he was referred to as the “Second Ptolemy”.  As the first to determine that vision results from light being reflected from an object to the eye, he is often referred to as “the father of optics”.  He is also praised for being among the first theoretical physicists.  He was one of the first scientists to support the notion that hypotheses must be evidenced by either mathematics or experiments designed with verifiable methods.

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