By Natural Philosopher Mike Prestwood
Timeline Story

Alhazen (965-1040)

Alhazen (965-1040)

From Year 0 (BCE/CE): 965
Post Date: 04/10/2024
42 Generations Ago

30 Phil, Chapter 17: Alhazen and the Senses
Touchstones: Senses and Perceptions

Pictured: Artist impression.

Alhazen was born in Basra around 965 CE, a city located in present-day Iraq. In his 30s, Alhazen faced the challenge of his life. He was “commissioned” to produce a solution for regulating the unpredictable and deadly flooding of the Nile. As he delved into the problem, it became clear the task was impossible. The “emission theory,” the prevalent theory before Alhazen, asserted that light originates from your eyes, hits objects, and is then reflected back. In “Book of Optics,” he explored aspects of vision and light, including reflection and refraction. He disproved the emission theory and proved the intromission theory. 

4 Minutes with Mike Prestwood: Weekly Wisdom Builder
May 26, 2024 Edition
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