Assertion: cathode ray tube's electron gun | /r/HasProperty | a source of electrons
Facets:
Source sentences:
text: The cathode ray tube (CRT) is an evacuated glass envelope containing an electron gun (a source of electrons) and a fluorescent screen, usually with internal or external means to accelerate and deflect the electrons.
text: The cathode ray tube (CRT), invented by German physicist Karl Ferdinand Braun in 1879, is an evacuated glass envelope containing an electron gun (a source of electrons) and a fluorescent screen, usually with internal or external means to accelerate and deflect the electrons.