Both terms are abbreviated as EMF. The actual EMF at any point in space is the cumulative EMF from all sources, and the magnitude and direction of all sources are summed to give the total EMF.

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(You can’t get more ’90s than a montage set to EMF’s “Unbelievable.”) But that’s a bit of a head fake; this is a movie with more on its mind. A.J. (Conor Sherry) and Moose (Gabriel ...