Share this entry

Share this page

cathode ray

Line breaks: cath|ode ray

Definition of cathode ray in English:

noun

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.

Definition of cathode ray in:

Share this entry

Share this page

 

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day odium
Pronunciation: ˈōdēəm
noun
widespread hatred or disgust for someone…