"WiTricity is based on using coupled resonant objects. Two resonant objects of the same resonant frequency tend to exchange energy efficiently, while interacting weakly with extraneous off-resonant objects. A child on a swing is a good example of this. A swing is a type of mechanical resonance, so only when the child pumps her legs at the natural frequency of the swing is she able to impart substantial energy.
Another example involves acoustic resonances: Imagine a room with 100 identical wine glasses, each filled with wine up to a different level, so they all have different resonant frequencies. If an opera singer sings a sufficiently loud single note inside the room, a glass of the corresponding frequency might accumulate sufficient energy to even explode, while not influencing the other glasses. In any system of coupled resonators there often exists a so-called "strongly coupled" regime of operation. If one ensures to operate in that regime in a given system, the energy transfer can be very efficient."
Just goes to show that any idiot can have an idea for a great new technology, but it take a team of real geeks to make it happen.I can't even imagine what this technology would mean for energy trade and availability. Imagine what it would do for power grids...peer-to-peer energy sharing? Suddenly energy technology would not have to rely on a small number of centralized, high yield sources, but rather would be all about a de-centralized network consisting of a vast number of even the lowest-yield energy generators. Call it Nanopower, or the Enerweb - free, clean energy for everyone!