The tangle of cables and plugs needed to recharge today's electronic gadgets could soon be a thing of the past.
US researchers have outlined a relatively simple system that could deliver power to devices such as laptop computers or MP3 players without wires.
The concept exploits century-old physics and could work over distances of many metres, the researchers said.
http://news.bbc.co.uk/1/hi/technology/6129460.stm