An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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wedge photometer
  نورسنج ِ گُوه‌ای  
nursanj-e gove-yi
Fr.: photomètre à coin  

A photometer in which an → absorbing wedge is inserted in the brighter of two beams until the flux densities of the two light sources are equal.

See also: → wedge; → photometer.