Assertion: cathode ray tube's phosphor | /r/CapableOf | emit light
Facets:
value: by excitation
type: MANNER
Source sentences:
text: The amount of time the phosphors emit light, or glow, after being struck by the electron beam is also important and is controlled by the chemical composition of the phosphor.
text: The screen is covered with a fine layer of phosphorescent elements, called phosphors, which emit light by excitation when electrons strike them, creating a lit-up dot called a pixel.
text: The excited phosphor emits light as it returns to its ground state, thus creating a small area of the image.