An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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objective lens
  عدسی ِ بر‌آختی  
adasi-ye barâxti
Fr.: lentille de l'objectif  

The lens or system of lenses in a → telescope or → microscope that magnify an object and project a larger → image. The object lens is nearest the object being viewed

See also: → objective; → lens.