Definition of cathode ray in English:

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cathode ray


A beam of electrons emitted from the cathode of a high-vacuum tube.
Example sentences
  • Inside this glass tube, evacuated of air, a negatively charged and heated metal plate emitted a beam - a cathode ray - that could be focused and accelerated by its attraction towards a positively charged plate.
  • TV detector vans do not work by picking up radiation from the cathode ray tube
  • This sends information to the cathode ray in the back of your television, which projects it onto the screen.
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