nærfelteffekter
Nærfelteffekter refers to phenomena that occur in the immediate vicinity of an oscillating electric or magnetic dipole. These effects are characterized by a strong dependence on distance and a rapid decrease in strength as one moves away from the source. Unlike far-field effects, which involve propagating electromagnetic waves, near-field effects are dominated by reactive fields that store and release energy.
In the electric near-field, the electric field lines are not straight and parallel but curve significantly,
These effects are crucial in understanding the behavior of antennas at very close range, magnetic resonance