bn:00035557n
Noun Concept
Categories: Geometrical optics, Science of photography, All articles needing additional references
EN
focus  focal point  Camera focus  Distinct base  fixation point
EN
A point of convergence of light (or other radiation) or a point from which it diverges WordNet 3.0
English:
optics
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EN
A point of convergence of light (or other radiation) or a point from which it diverges WordNet 3.0 & Open English WordNet
In geometrical optics, a focus, also called an image point, is a point where light rays originating from a point on the object converge. Wikipedia
A point toward which rays are made to converge Wikipedia Disambiguation
Point where parallel light rays or light rays originating from a point will converge Wikidata
A focus; a point at which rays of light or other radiation converge. Wiktionary
(optics) a focus; a point at which rays of light or other radiation converge. Wiktionary (translation)
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