An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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strong lensing
  لنزش ِ سترگ  
lenzeš-e sotorg
Fr.: effet de lentille fort  

A situation where the mass concentration in the central regions of → galaxy clusters exceeds the → critical density required for lensing, resulting in multiple images of background objects.

See also: → strong; → lensing.