A new system for transmitting power could get rid of the tangle of cables that keep alive our cell phones, laptops and other devices, researchers report.
Physicists at the Massachusetts Institute of Technology in Cambridge, Mass. found that power could be transmitted without wires using special “resonant” antennas. The researchers used the system to power a 60-watt light bulb more than two meters (about two yards) from a wireless transmitter at 40 percent efficiency.
The MIT concept, called “WiTricity” for wireless electricity, involves using so-called coupled resonators. These are objects that, if struck or disturbed, tend to naturally oscillate at a definite rhythm. If two of them tend to have matching rhythms, they actually enhance each others’ oscillations.
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Wow, This would be so useful.