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Re: Whoah...wireless electricity..now this is cool
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Originally Posted by Otter
It sounds to me like the 'wireless electricity' only works within a very short range; the article does not say how close the device must be to it's charge source, but it says they must be close together. So I'm thinking that this isn't describing a real power delivery system.
I'm not a physicist or electrical engineer, but my understanding is that electricity always looses power when transferred over long distances, even with low resistance. It seems to me that travelling through space would be rather higer resistance than through wires, but I don't know how Tesla's stuff works.
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It's done by inductance.
There was talk of putting coils under highways, and in electric cars, and the cars could draw power by inductance, and have unlimited range on the highway, using batteries only when it got off the highway.
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Adam Smith , The Wealth of Nations 1776
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FDR's second Inaugural Address
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