Ibn al-Haytham

965 - 1039

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Ḥasan Ibn al-Haytham (Latinized as Alhazen ; full name Abū ʿAlī al-Ḥasan ibn al-Ḥasan ibn al-Haytham أبو علي، الحسن بن الحسن بن الهيثم; c. 965 – c. 1040) was a Muslim Arab mathematician, astronomer, and physicist of the Islamic Golden Age. Referred to as "the father of modern optics", he made significant contributions to the principles of optics and visual perception in particular. His most influential work is titled Kitāb al-Manāẓir (Arabic: كتاب المناظر, "Book of Optics"), written during 1011–1021, which survived in a Latin edition. Read more on Wikipedia

Since 2007, the English Wikipedia page of Ibn al-Haytham has received more than 1,348,564 page views. His biography is available in 82 different languages on Wikipedia (up from 81 in 2019). Ibn al-Haytham is the 24th most popular physicist, the 8th most popular biography from Iraq (down from 7th in 2019) and the most popular Iraqi Physicist.

Ibn al-Haytham is most famous for his contributions to the field of optics. He is credited with discovering the principle of the pinhole camera, which is still used in photography today. He also contributed to the fields of geometry and trigonometry.

Memorability Metrics

  • 1.3M

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  • 82.45

    Historical Popularity Index (HPI)

  • 82

    Languages Editions (L)

  • 9.13

    Effective Languages (L*)

  • 4.27

    Coefficient of Variation (CV)

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Among physicists, Ibn al-Haytham ranks 24 out of 721Before him are Christiaan Huygens, Georg Ohm, Erwin Schrödinger, Hans Christian Ørsted, Heinrich Hertz, and Enrico Fermi. After him are Pierre Curie, Daniel Bernoulli, Hendrik Lorentz, Luigi Galvani, Louis de Broglie, and Henry Cavendish.

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Among people born in 965, Ibn al-Haytham ranks 1After him are Hisham II, Henry I, Margrave of Austria, Theodoric I, Duke of Upper Lorraine, Sancho García of Castile, Frederick of Luxembourg, and Godfrey II, Duke of Lower Lorraine. Among people deceased in 1039, Ibn al-Haytham ranks 1After him are Conrad II, Holy Roman Emperor, Cunigunde of Luxembourg, Dirk III, Count of Holland, and Unsuri.

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In Iraq

Among people born in Iraq, Ibn al-Haytham ranks 8 out of 300Before him are Saladin (1138), Hammurabi (-1810), Saddam Hussein (1937), Nebuchadnezzar II (-630), Sarah (-1803), and Abu Hanifa (698). After him are Sargon of Akkad (-2300), Mani (216), Al-Kindi (801), Ashurbanipal (-685), Ahmad ibn Hanbal (780), and Alexander IV of Macedon (-323).

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Among physicists born in Iraq, Ibn al-Haytham ranks 1After him are Jim Al-Khalili (1962).