> If you had a permeable core that could saturate

So, if I understand it (or something, anyway), an air core inductor/
antenna would be preferred, as the intention is to radiate energy,
not lose it in a solid core ?

As for the transfer itself, say I make two identical air-core inductors/
antennae, spatially in parallel. If one is driven resonantly, the other
should be a matching receiver ?

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