#source_of_illumination  any device serving as a source of visible electromagnetic radiation
  supertype:  device  an instrumentality invented for a particular purpose; "the device is small enough to wear on your wrist"; "a device intended to conserve water"
  subtype:  lamp  an artificial source of visible illumination
     subtype:  Aladdin's_lamp  (in the Arabian Nights) a magical lamp from which Aladdin summoned a genie
     subtype:  candle__taper__wax_light__waxlight  stick of wax with a wick in the middle
        subtype:  rushlight__rush_candle  a tallow candle with a rush stem as the wick
        subtype:  vigil_light__vigillight__vigil_candle__vigilcandle  a candle lighted by a worshiper in a church
     subtype:  electric_lamp  a lamp powered by electricity
        subtype:  arc_lamp__arclamp__arc_light__arclight  a lamp that produces light when electric current flows across the gap between two electrodes
           subtype:  carbon_arc_lamp__carbon_arc  has carbon electrodes
              subtype:  klieg_light__klieglight  carbon arc lamp that emits an intense light used in producing films
        subtype:  electric-discharge_lamp__gas-discharge_lamp__gasdischargelamp  an electric lamp in which the light comes from an electric discharge between two electrodes in a glass tube
        subtype:  flashlight__torch  a small portable battery-powered electric lamp
           subtype:  penlight  a small flashlight resembling a fountain pen
        subtype:  electric-light_bulb__light_bulb__lightbulb__lightbulb__bulb__incandescent_lamp__electric_light  electric lamp consisting of a glass bulb containing a wire filament (usually tungsten) that emits light when heated
     subtype:  flash_lamp__flashlamp__flash__photoflash__flashgun__flashbulb  a lamp for providing momentary light to take a photograph
     subtype:  fluorescent_lamp__fluorescentlamp  lamp consisting of a tube coated on the inside with a fluorescent material; mercury vapor in the tube emits ultraviolet radiation that is converted to visible radiation by the fluorescent material
     subtype:  gas_lamp__gaslamp  a lamp that burns illuminating gas
     subtype:  hurricane_lamp__hurricanelamp__hurricane_lantern__hurricanelantern__tornado_lantern__tornadolantern__storm_lantern__stormlantern__storm_lamp__stormlamp  an oil lamp with a glass chimney and perforated metal lid to protect the flame from high winds; candlestick with a glass chimney
     subtype:  lantern  light in a transparent protective case
        subtype:  Chinese_lantern  a collapsible paper lantern in bright colors; used for decorative purposes
        subtype:  dark_lantern  a lantern with a sliding panel to conceal the light
        subtype:  jack-o'-lantern  lantern carved from a pumpkin
     subtype:  calcium_light__calciumlight__limelight  a lamp consisting of a flame directed at a cylinder of lime with a lens to concentrate the light; formerly used for stage lighting
     subtype:  neon_lamp__neon_induction_lamp__neon_tube  a lamp consisting of a small gas-discharge tube containing neon at low pressure; luminescence is produced by the action of currents at high frequencies that are wrapped a few turns around the tube
     subtype:  oil_lamp__oillamp__kerosene_lamp__kerosine_lamp  a lamp that burns oil (as kerosine) for light
        subtype:  safety_lamp__Davy_lamp  an oil lamp that will not ignite flammable gases (methane)
     subtype:  sodium-vapor_lamp__sodium-vapour_lamp  lamp in which an electric current passed through a tube of sodium vapor makes a yellow light; used is street lighting
     subtype:  spirit_lamp  a lamp that burns a volatile liquid fuel such as alcohol
     subtype:  spotlight__spot  a lamp that produces a strong beam of light to illuminate a restricted area; used to focus attention of a stage performer
     subtype:  streetlight__street_lamp  a lamp supported on a lamppost; for illuminating a street
     subtype:  taillight__tail_lamp__rear_light__rear_lamp  lamp (usually red) mounted at the rear of a motor vehicle
  subtype:  light_source__lightsource__light  any device serving as a source of illumination; "he stopped the car and turned off the lights"
     subtype:  anchor_light__riding_light__riding_lamp  a light in the rigging of a ship that is riding at anchor
     subtype:  blinker__flasher  a light that flashes on and off; used as a signal or to send messages
     subtype:  flood_lamp__floodlamp__flood__floodlight__photoflood  light that is a source of artificial illumination having a broad beam; used in photography
     subtype:  headlight__headlamp  a powerful light with reflector; attached to the front of an automobile or locomotive
        subtype:  foglamp  headlight that provides strong beam for use in foggy weather
     subtype:  houselights__houselight  lights that illuminate the audience part of a theater or other auditorium
     subtype:  navigation_light  light on an airplane that indicates the plane's position and orientation; red light on the left (port) wing tip and green light on the right (starboard) wing tip
     subtype:  nightlight  light (as a candle or small bulb) that burns in a bedroom at night (as for children or invalids)
     subtype:  panel_light  a light to illuminate an instrument panel
     subtype:  room_light  light that provides general illumination for a room
     subtype:  searchlight  a light source with reflectors that projects a beam of light in a particular direction
     subtype:  sidelight__running_light__runninglight  light carried by a boat that indicates the boat's direction; vessels at night carry a red light on the port bow and a green light on the starboard bow
     subtype:  strip_lighting__striplighting  light consisting of long tubes (instead of bulbs) that provide the illumination
     subtype:  theater_light__theaterlight  any of various lights used in a theater
        subtype:  footlight__footlights  theater light at the front of a stage that illuminate the set and actors
     subtype:  torch  a light carried in the hand; consists of some flammable substance
        subtype:  flambeau  a flaming torch (such as are used in processions at night)
  subtype:  ultraviolet_lamp__ultravioletlamp__ultraviolet_source__ultravioletsource  any source of illumination that emits ultraviolet 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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