Matches in DBpedia 2014 for { ?s ?p The angular aperture of a lens is the apparent angle of the lens aperture as seen from the focal point:where is the focal lengthis the diameter of the aperture.. }
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- Angular_aperture abstract "The angular aperture of a lens is the apparent angle of the lens aperture as seen from the focal point:where is the focal lengthis the diameter of the aperture.".
- Angular_aperture comment "The angular aperture of a lens is the apparent angle of the lens aperture as seen from the focal point:where is the focal lengthis the diameter of the aperture.".