An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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absorption spectrum
  بیناب ِ درشمی  
binâb-e daršami
Fr.: spectre d'absorption  

A spectrum of absorption lines or bands, produced when light from a hot source, itself producing a continuous spectrum, passes through a cooler gas.

See also: → absorption; → spectrum.