Assertion: electron | /r/HasProperty | important
Facets:
value: in cathode ray tubes
type: LOCATION
Source sentences:
text: Electrons are important in cathode ray tubes, which have been extensively used as display devices in laboratory instruments, computer monitors and television sets.
text: Electrons are important today because, together with protons and neutrons, they make the atoms from which you and I are made.
text: Electrons are important in cathode ray tubes, which have been extensively used as display devices in laboratory instruments, computer monitors and television sets.