#line.electromagnetic_radiation  a single frequency (or very narrow band) of radiation in a spectrum
  supertype:  #electromagnetic_radiation__electromagneticradiation__electromagnetic_wave__electromagneticwave__nonparticulate_radiation  radiation consisting of waves of energy associated with electric and magnetic fields resulting from the acceleration of an electric charge
  part of:  #electromagnetic_spectrum__electromagneticspectrum  the entire frequency range of electromagnetic waves

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