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Medical Dictionary

photon

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noun pho·ton \ˈfō-ˌtän\

Medical Definition of photon

  1. 1:  a unit of intensity of light at the retina equal to the illumination received per square millimeter of a pupillary area from a surface having a brightness of one candle per square meter—called also troland

  2. 2:  a quantum of electromagnetic radiation




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