Assertion: antenna's element | /r/HasAspect | node
Facets:
value: conveniently
type: MANNER
value: at their centre
type: LOCATION
Source sentences:
text: Conveniently, the dipole parasitic elements have a node (point of zero RF voltage) at their centre, so they can be attached to a conductive metal support at that point without need of insulation, without disturbing their electrical operation.