Assertion: magnetism | /r/HasProperty | due
Facets:
Source sentences:
text: In this model, a magnetic H-field is produced by "magnetic poles" and magnetism is due to small pairs of north/south magnetic poles.
text: In it, he showed the equivalence of electrical currents to magnets and proposed that magnetism is due to perpetually flowing loops of current instead of the dipoles of magnetic charge in Poisson's model.[nb 2]