- geometrical optic approximation
- лучевое приближение
Большой англо-русский и русско-английский словарь. 2001.
geometrical optic approximation
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лучевое приближение — — [http://slovarionline.ru/anglo russkiy slovar neftegazovoy promyishlennosti/] Тематики нефтегазовая промышленность EN geometrical optic approximationray approximation … Справочник технического переводчика
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Numerical aperture — The numerical aperture with respect to a point P depends on the half angle θ of the maximum cone of light that can enter or exit the lens. In optics, the numerical aperture (NA) of an optical system is a dimensionless number that characterizes… … Wikipedia
