An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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cutoff wavelength
  موج-طول ِ بره  
mowj-tul-e boré
Fr.: longueur d'onde de coupure  

Wavelength at which the transmittance of a filter, or the detectivity of a detector, has fallen to one-half its peak value.

See also: → cutoff; → wavelength.