An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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curve of growth
  خم ِ رویش  
xam-e ruyeš
Fr.: courbe de croissance  

A plot showing how the → equivalent width of an → absorption line, or the radiance of an → emission line, increases as a → function of the → number of → atoms that produce the line.

See also: → curve; → growth.