The Folks at MIT recently demonstrated their scheme for wireless transmission of electricity, called WiTricity. The scheme is based on magnetically coupled resonant objects. Two objects which resonate at the same frequency are able to efficiently exchange energy while ignoring other objects. This method is in contrast to other forms of radio frequency transmission of electricity. Transmission of power by means of radio frequency results in an in-efficient system because energy is transmitted radially from the power source.

The experiment published in 'Science' demonstrated the powering of a 60 watt light bulb from 7 feet away.