[qrp-canada] FW: GB> Wireless Electricity?

[Bry Carling]

"Useful" is very much a relative term here!

They are just using magnetic induction with coils.
I don't think they have discovered anything new.
 
> Some may have also been intrigued by the news story today proclaiming 
> that MIT scientists had discovered how to transmit useful amounts of 
> electic power without wires. It's not Glowbug, but it IS quite 
> fascinating, and does use RF:
> 
> http://www.cbc.ca/technology/story/2007/06/08/tech-wireless-power.html
> 
> I was curious about this "non radiative energy transfer" and the use of 
> "strongly coupled magnetic resonances" so I did some digging and found a 
> technical paper that explains the mechanism in detail: 
> http://arxiv.org/ftp/physics/papers/0611/0611063.pdf Even if you skip 
> thru the math you can get the gist of it, and this isn't plain old 
> induction, nor is it what Tesla did. Looks like ideal turf for home 
> experimentation, especially to those who can whip up an RF exciter and 
> something that looks like a six-meter halo.
> 
> A presentation by Dr. /Marin Soljac(ic' at the 2006 AIP Industrial 
> Physics forum can be found here: http://www.aip.org/ca/2006/soljacic.pdf
> 
> Who says there's nothing new under the sun? Except for new ways of thinking!
> 
> 73, Bob W9RAN
> ///
> 
> 
> 
> 
> 
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