An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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Einstein ring
  حلقه‌ی ِ اینشتین  
halqe-ye Einstein
Fr.: anneau d'Einstein  

The apparent shape of a background source unsergoing the effect of → gravitational lensing as seen from Earth, provided that the source, the intervening lens, and the observer are in perfect alignement through → Einstein radius.

See also: → Einstein; → ring.