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 wirelessly.
The concept exploits century-old physics and could work over distances of many metres, the researchers said.
Although the team had not built and tested a system, computer models and mathematics suggest it would work.
"There are so many autonomous devices such as cell
phones and laptops that have emerged in the last few years," said
Assistant Professor Marin Soljacic from the Massachusetts Institute of
Technology and one of the researchers behind the work.
"We started thinking, 'it would be really convenient if you didn't have to recharge these things'.
"And because we're physicists we asked, 'what kind of physical phenomenon can we use to do this wireless energy transfer?'."
http://news.bbc.co.uk/2/hi/technology/6129460.stm
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