#actinic_radiation__actinic_ray__actinicray  electromagnetic radiation that can produce photochemical reactions
  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
  subtype:  infrared_radiation__infrared__infrared_light__infrared_emission  electromagnetic radiation with wavelengths longer than visible light but shorter than radio waves
  subtype:  visible_light__visiblelight__light__visible_radiation__visibleradiation  (physics) electromagnetic radiation that can produce a visual sensation; "the light was filtered through a soft glass window"
     subtype:  beam_of_light__beam__light_beam__lightbeam__ray__rayoflight__shaft__shaft_of_light  a column of light (as from a beacon)
        subtype:  heat_ray  a ray that produces a thermal effect
           subtype:  infrared_ray  a ray of infrared radiation; produces a thermal effect (as from an infrared lamp)
        subtype:  high_beam  the beam of a car's headlights that provides distant illumination
        subtype:  moonbeam__moonray  a ray of moonlight
        subtype:  sunbeam__sunray  a ray of sunlight
        subtype:  laser_beam__laserbeam  a beam of light generated by a laser
        subtype:  low_beam__lowbeam  the beam of a car's headlights that provides illumination for a short distance
     subtype:  candlelight__candle_flame  the light provided by a burning candle
     subtype:  corona.visible_light  one or more circles of light seen around a luminous object
     subtype:  counterglow__gegenschein  a faint spot of light in the night sky that appears directly opposite the position of the sun; a reflection of sunlight by micrometeoric material in space
     subtype:  daylight  light during the daytime
     subtype:  firelight  the light of a fire (especially in a fireplace)
     subtype:  fluorescence  light emitted during absorption of radiation of some other (invisible) wavelength
        subtype:  autofluorescence  self-induced fluorescence
        subtype:  phosphorescence  a fluorescence that persists after the bombarding radiation has ceased
     subtype:  friar's_lantern__ignis_fatuus__jack-o'-lantern__will-o'-the-wisp  a pale light sometimes seen at night over marshy ground
     subtype:  gaslight  light yielded by the combustion of illuminating gas
     subtype:  glowing__radiance__glow  the amount of electromagnetic radiation leaving or arriving at a point on a surface
        subtype:  aureole__corona  the outermost region of the sun's atmosphere; visible as a white halo during a solar eclipse
     subtype:  half-light  a grayish light (as at dawn or dusk or in dim interiors)
     subtype:  incandescence.visible_light__glow  the phenomenon of light emission by a body as its temperature is raised
     subtype:  lamplight  light from a lamp
     subtype:  luminescence  light not due to incandescence; occurs at low temperatures
        subtype:  bioluminescence  luminescence produced by physiological processes (as in the firefly)
        subtype:  chemiluminescence  luminescence resulting from a chemical reaction as the oxidation of luciferin in fireflies
     subtype:  meteor__shooting_star  a streak of light in the sky at night that results when a meteoroid hits the earth's atmosphere and air friction causes the meteoroid to melt or vaporize or explode
        subtype:  bolide__fireball  an especially luminous meteor (sometimes exploding)
     subtype:  moonlight__moonshine__moon  the light of the moon; "moonlight is the smuggler's enemy"; "the moon was bright enough to read by"
     subtype:  starlight  the light of the stars
     subtype:  sunlight__sunshine__sun  the rays of the sun; "the shingles were weathered by the sun and wind"
     subtype:  streamer  light that streams; "streamers of flames"
     subtype:  torchlight  light from a torch or torches
     subtype:  twilight  the diffused light from the sky when the sun is below the horizon but its rays are refracted by the atmosphere of the earth
  subtype:  ultraviolet_illumination__ultravioletillumination__ultraviolet__ultraviolet_radiation__ultravioletradiation__ultraviolet_light__ultravioletlight__UV  radiation lying in the ultraviolet range; wave lengths shorter than light but longer than X rays

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