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MIT's 'WiTricity' Makes Power Cords Obsolete
MIT's 'WiTricity' Makes Power Cords Obsolete
By Barry Levine / NewsFactor Business Like this on Facebook Tweet this Link thison Linkedin Link this on Google Plus
PUBLISHED:
JUNE
08
2007


(Page 2 of 2)

It might sound like magnetic induction, which is used in transformers to transmit power between two, very close but nontouching coils, but the researchers note that such nonresonant magnetic induction drops off very quickly as the coils are moved apart, and are about a "million times less efficient" than resonant magnetic coupling.

The researchers haven't set their sights on transmitting worldwide, yet. Instead, they envision wirelessly transmitting power to a laptop, or to Soljacic's cell phone, across an office or inside a house. Because the power stream can be consistent, the device would not even need a battery.

Still Wired for Now

Samir Bhavnani, research director at Current Analysis, called the MIT team's work "awesome."

"I love the idea of getting rid of the remaining wires, which are mostly power cords, within a business or home," he said. He also noted that, if implemented, this research could mean not having to deal with battery life for office- or home-bound devices.

But, Bhavnani cautioned, this is only the first step, and it could be years before we see such technology on the market.

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FYI:
Posted: 2014-03-02 @ 1:55am PT
Nikola Tesla did this over 100 years ago in Colorado Springs.

Bob Montoya:
Posted: 2010-11-21 @ 9:34pm PT
I think we construct a large enough receiver antenna to draw power from the earth's magnetic field. Really

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