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WiTricity - Wireless Electricity
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Summary
Trillions of dollars have been spent to create an electricity infrastructure around the world, putting up wires to get power from where it’s created to where it’s used. In addition, there are 40 billion disposable batteries used every year, for power that generally is used within a few inches or a few feet from where there is very inexpensive power.
A few years ago, a group of theoretical physicists at MIT came up with a concept of transferring power over distance. They were able to light a 60 watt light bulb at a distance of about 2 meters. Imagine a coil with a capacitor attached to it. If you can cause that coil to resonate, it will pulse at alternating current frequencies, at a fairly high frequency. If you bring another device close enough to the source, that will only work at that frequency, you will be able to transfer magnetic energy between them. This transferred magnetic energy can be converted back into electricity.
Keywords: Witricity, wireless electricity, Eric Giler, batteries, resonant energy transfer
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