Even though we've seen some notable progress in this area through inductive charging on devices like the Dell Latitude Z or the Touchstone charger for the Palm Pre, this technology still requires physical contact. Luckily for those keen on the idea of a truly wireless world, Sony has announced the development of a new energy transfer system which it claims will eventually eliminate the use of power cables once and for all.
In its tests the company succeeded in sending a conventional 100 volt electricity supply over a distance of 50 centimeters to power a 22-inch LCD television. The system achieves this feat through high-frequency magnetic resonance, which produces a magnetic field by feeding power into a 40cm-wide square coil of wires.
Of course being an early prototype there are a few drawbacks, including the distance over which it works and the system's 60 percent efficiency, which means a significant portion of the power fed into it is wasted. The company shared no details on how safe the technology is -- an obvious concern -- nor did it offer an estimate on when it will be ready for real world availability.