#cathode-ray_tube__cathoderaytube__CRT  a vacuum tube in which a hot cathode emits a beam of electrons that pass through a high voltage anode and are focused or deflected before hitting a phosphorescent screen
  supertype:  gas-discharge_tube__gasdischargetube  a tube in which an electric discharge takes place through a gas
  part:  electron_gun  CRT_screen
  part of:  electronic_computer  cathode-ray_oscilloscope  television_system
  subtype:  Crookes_tube  the original gas-discharge cathode-ray tube
  subtype:  kinescope__picture_tube__picturetube__television_tube  a cathode-ray tube in a television receiver; translates the received signal into a picture on a luminescent screen
     subtype:  color_tube__colortube__colour_tube__color_television_tube__colour_television_tube__color_TV_tube__colour_TV_tube  a television tube that displays images in full color
        subtype:  tricolor_television_tube__tricolour_television_tube__tricolor_tube__tricolour_tube__tricolourtube  a color television tube in which three primary colors are combined to give the full range of colors

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