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Noun: photometer  fow'tó-mi-tu(r)
  1. Measuring instrument for measuring the luminous intensity of a source by comparing it (visually or photoelectrically) with a standard source
     
  2. Photographic equipment that measures the intensity of light
    - light meter, exposure meter

Derived forms: photometers

Type of: measuring device, measuring instrument, measuring system, photographic equipment

Encyclopedia: Photometer

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