Assertion: cathode ray tube | /r/CapableOf | use a beam of electrons
Facets:
value: in order to produce an image
type: PURPOSE
value: to paint a phophoresent screen
type: PURPOSE
Source sentences:
text: A cathode-ray tube is a device that uses a beam of electrons in order to produce an image on a screen.
text: Some cathode-ray tubes use multiple beams of electrons, displaying more than one color.
text: A cathode ray tube is a device that uses a beam of electrons in order to produce an image on a screen.
text: The cathode ray tube uses a beam of electrons to paint a phophoresent screen.