Assertion: cathode ray tube's electron gun | /r/CapableOf | emit electron
Facets:
Source sentences:
text: The source of focused and accelerated beam is the electron gun, which emits electrons and forms them into a beam consists of a heater, cathode, a grid, a pre-accelerating anode, a focusing anode and accelerating anode.
text: The electron gun emits the electrons and forms them into a beam.