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Work · Philosophy in the Islamic World

Doubts concerning Ptolemy

c. 1028 · by Ibn al-Haytham (Alhazen)

Critique of Ptolemy’s Almagest, Planetary Hypotheses and Optics: some of Ptolemy’s models, such as the equant, contradict his own principle that the heavens move in uniform circles; the true arrangement remains to be found. The treatise opened a long tradition of non-Ptolemaic astronomy in the Islamic world.

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More works by Ibn al-Haytham (Alhazen)

Sources: Wikidata

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