Assertion: cathode's electron | /r/HasProperty | focused to narrow beam
Facets:
Source sentences:
text: By controlling the number of electrons by the anode and hence the focusing anode ensures that electrons leaving the cathode in slightly different directions are focused down to a narrow beam and all arrive at the same spot on the screen.
text: The focusing anode ensures that the electrons emitted from the cathode in slightly different directions are focused down to a narrow beam and all arrive at the same spot on the screen.