Assertion: magnetic field | /r/CreatedBy | fictitious magnetic charges
Facets:
value: on the surface of the poles
type: LOCATION
value: with pole strength m
type: OTHER
Source sentences:
text: For electromagnets (or permanent magnets) with well defined 'poles' where the field lines emerge from the core, the force between two electromagnets can be found using the 'Gilbert model' which assumes the magnetic field is produced by fictitious 'magnetic charges' on the surface of the poles, with pole strength m and units of Ampere-turn meter.