Demo of Short-Range Wireless Power Transfer

Re:Demo of Short-Range Wireless Power Transfer by Gravityloss on Thursday February 16, 2017 @05:25PM (#13664150)

Hmm, didn't think of it like that. Although most things are indeed quite reflective in the infrared. You should choose a frequency that humans would absorb, but walls and furniture etc would reflect. Or you would need to buy "certified microwave non-absorbing" wares only for such rooms.

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Re:Demo of Short-Range Wireless Power Transfer by mirimir on Thursday February 16, 2017 @05:30PM (#13664185)

The idea was to use very high frequency microwaves, so that only skin surface was heated.

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Re:Demo of Short-Range Wireless Power Transfer by hinkley on Thursday February 16, 2017 @07:05PM (#13664815)

I thought the problem was that this also heats ocular fluid and furniture staples causing potential problems with things like macular degeneration or house fires, respectively.

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Re:Demo of Short-Range Wireless Power Transfer by mirimir on Thursday February 16, 2017 @08:40PM (#13665245)

If the penetration depth is << 1 mm, I can't imagine that ocular heating would be an issue. And I'd expect that power levels would be too low to heat metal. But maybe so.

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Re:Demo of Short-Range Wireless Power Transfer by sandworm101 on Thursday February 16, 2017 @09:16PM (#13665424)

But any sparks from the metal coulf cause fires. Not much power needed for a spark.

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Re:Demo of Short-Range Wireless Power Transfer by jacquesm on Thursday February 16, 2017 @05:43PM (#13664294)

I wonder what your DNA integrity check has to say about that after a couple of years of exposure.

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Re:Demo of Short-Range Wireless Power Transfer by mirimir on Thursday February 16, 2017 @05:55PM (#13664384)

That's probably why it's never gone past "hey, why not..." since the 70s ;)

On the other hand, the outer ~0.03 mm is dead. So ???

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