cathode : Idioms & Phrases


Cathode ray

  • noun a beam of electrons emitted by the cathode of an electrical discharge tube
WordNet
  • (Phys.), a kind of ray generated at the cathode in a vacuum tube, by the electrical discharge X-ray .
Webster 1913

cathode-ray oscilloscope

  • noun electronic equipment that provides visual images of varying electrical quantities
    scope; CRO; oscilloscope.
WordNet

cathode-ray tube

  • noun 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
    CRT.
WordNet

cold cathode

  • noun a cathode that is a source of electrons without being heated
WordNet