Intel演示无线充电技术
from slashdot.orgLast Thursday researchers from Intel demonstrated a way to recharge electronics from about meter awayusing a 'resonant' magnetic field. At an event held at the ComputerHistory Museum in Mountain View, the researchers showed off a pair ofiPod speakers connected to a 30-centimeter-wide copper coil thatreceived power from a similar, but larger, copper coil about a meteraway. The recharging technique relies on a phenomenon called resonantcoupling, in which objects can exchange energy when tuned to resonateat the same frequency. A similar approach was developed by researchers at MIT in 2007, and spun off into a company called WiTricity. This company has already developed a few products that use resonant coupling to recharge, including a car battery.
回顾一下，下面这幅图是mit的那个project
看来WSN的省电研究可以不必钻太深了，实在是很重要的网络就用无线充电好了。下面的研究课题是如何提高无线输电的效率，恩。。。值得研究。。。
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