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Which photometer is used for comparing the light of different colors?

  • Guilds Flicker Photometer is used for comparing the light of different colors, specifically for determining the color rendering index (CRI) of a light source.
  • The color rendering index is a measure of how well a light source is able to reproduce the colors of objects compared to a reference light source, such as daylight.
  • The Guilds Flicker Photometer measures the flicker caused by the alternation of the test and reference light sources and uses this to determine the CRI.