An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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dark adaptation
  نیاوش به تاریکی  
niyâveš bé târiki
Fr.: adaptation à l'obscurité  

The automatic adjustment of the iris and retina of the eye to allow maximum vision in the dark, following exposure of the eye to a relatively brighter illumination.

See also: → dark; → adaptation.