Assertion: semiconductor | /r/HasAspect | filament
Facets:
Source sentences:
text: As semiconductor devices have no filaments, hence no power is needed to heat them to cause the emission of electrons.
text: As semiconductor devices have no filaments, hence no power is needed to heat them to cause the emission of electrons.
text: They have no filaments or heaters, and therefore require no heating power or warm-up time.