Stories We Like: A Guide to the Comma
cathode ray cath·ode ray (kāth'ōd')
A stream of electrons emitted by the cathode in electrical discharge tubes.
One of the electrons that is emitted in a stream from a cathode-ray tube.
|cathode ray |
A beam of electrons streaming from the negatively charged end of a vacuum tube (the cathode) toward a positively charged plate (the anode).