Ibn al-Haytham's billiard problem for an ellipse (Q2818573)
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scientific article; zbMATH DE number 6625026
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Ibn al-Haytham's billiard problem for an ellipse |
scientific article; zbMATH DE number 6625026 |
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7 September 2016
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Claudius Ptolemy
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Ibn al-Haytham
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Alhazen's problem
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Ibn al-Haytham's billiard problem for an ellipse (English)
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Ptolemy asked: Given in the plane an object, an observer and a circular mirror. Find the points on the circle in which a light ray coming from the object is reflected to the eye of the observer. Al-Haytham solved this problem. In this paper, the author discusses a solution for the more general case in which the mirror has the form of an ellipse.
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