Assertion: tube | /r/HasProperty | dark
Facets:
value: by the time
type: TEMPORAL
value: totally
type: DEGREE
Source sentences:
text: Crookes found that as he pumped more air out of the tubes, the Faraday dark space spread down the tube from the cathode toward the anode, until the tube was totally dark.
text: By the time the tube was dark, most of the electrons could travel in straight lines from the cathode to the anode end of the tube without a collision.