About geometrical optics

Geometrical optics, or ray optics, is a model of optics that describes light propagation in terms of rays. The ray in geometrical optics is an abstraction useful for approximating the paths along which light propagates under certain circumstances.

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geometrical optics

model of optics describing light as geometric rays

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About geometrical optics

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Facts from Wikidata (CC0). Image via Wikimedia Commons (CC BY-SA 3.0).