A team from MIT’s Department of Physics, Department of Electrical Engineering and Computer Science, and Institute for Soldier Nanotechnologies (ISN) has experimentally demonstrated an important step toward accomplishing a vision of the future in which wireless power transfer is feasible. They were able to light a 60W light bulb from a power source more than two meters away. There was no physical connection between the source and the appliance.
https://news.mit.edu/2007/wireless-0607