#ultraviolet_lamp__ultravioletlamp__ultraviolet_source__ultravioletsource  any source of illumination that emits ultraviolet radiation
  supertype:  source_of_illumination  any device serving as a source of visible electromagnetic radiation
  subtype:  mercury-vapor_lamp__mercuryvaporlamp  ultraviolet lamp that emits a strong bluish light (rich in ultraviolet radiation) as electric current passes through mercury vapor
     subtype:  sunlamp__sunraylamp  a mercury-vapor lamp used in artificial sunray treatments

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