Assertion: cathode's electron | /r/CapableOf | make glowing line
Facets:
value: on the screen
type: LOCATION
Source sentences:
text: To reveal the path of the beam, Crookes invented a tube (see pictures) with a cardboard screen with a phosphor coating down the length of the tube, at a slight angle so the electrons would strike the phosphor along its length, making a glowing line on the screen.