Assertion: inductor's coil | /r/HasAspect | air
Facets:
value: in the centre
type: LOCATION
value: inside their windings
type: LOCATION
Source sentences:
text: All coils that are wound in non-magnetic materials like plastic, ceramic and those coils that have air inside their windings are called Air core coils.
text: The "magnetism" (the magnetic lines) are strongest in the centre of each turn of the coil and if the coil has air in the centre, only a small number of lines can be present before the air is SATURATED.