| 释义 |
cathode rays
cathode rays pl n (General Physics) a stream of electrons emitted from the surface of a cathode in a valve Cathode rays
Cathode rays The name given to the electrons originating at the cathodes of gaseous discharge devices. The term has now been extended to include low-pressure devices such as cathode-ray tubes. Furthermore, cathode rays are now used to designate electron beams originating from thermionic cathodes, whereas the term was formerly applied only to cold-cathode devices. cathode rays
cath·ode raysa stream of electrons emitted from the negative electrode (cathode) in a Crookes tube; their bombardment of the anode or the glass wall of the tube gives rise to x-rays.ThesaurusSeecathode ray |