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4 definitions found
 for CRT
From WordNet (r) 3.0 (2006) :

  CRT
      n 1: 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
           [syn: cathode-ray tube, CRT]

From V.E.R.A. -- Virtual Entity of Relevant Acronyms (September 2014) :

  CRT
         Cathode Ray Tube
         

From V.E.R.A. -- Virtual Entity of Relevant Acronyms (September 2014) :

  CRT
         Computer Technology Research [corporation] (provider)
         

From The Free On-line Dictionary of Computing (18 March 2015) :

  cathode ray tube
  CRT
  
      (CRT) An electrical device for displaying images by
     exciting phosphor dots with a scanned electron beam.  CRTs are
     found in computer VDUs and monitors, televisions and
     oscilloscopes.  The first commercially practical CRT was
     perfected on 29 January 1901 by Allen B DuMont.
  
     A large glass envelope containing a negative electrode (the
     cathode) emits electrons (formerly called "cathode rays") when
     heated, as in a vacuum tube.  The electrons are accelerated
     across a large voltage gradient toward the flat surface of
     the tube (the screen) which is covered with phosphor.  When an
     electron strikes the phosphor, light is emitted.  The electron
     beam is deflected by electromagnetic coils around the outside
     of the tube so that it scans across the screen, usually in
     horizontal stripes.  This scan pattern is known as a raster.
     By controlling the current in the beam, the brightness at any
     particular point (roughly a "{pixel") can be varied.
  
     Different phosphors have different "{persistence" - the
     length of time for which they glow after being struck by
     electrons.  If the scanning is done fast enough, the eye sees
     a steady image, due to both the persistence of the phospor and
     of the eye itself.  CRTs also differ in their dot pitch,
     which determines their spatial resolution, and in whether
     they use interlace or not.
  
     (1994-11-17)
  

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