"US researchers have outlined a relatively simple system that could deliver power to devices such as laptop computers or MP3 players without wires.
The team from MIT is not the first group to suggest wireless energy transfer.
Nineteenth-century physicist and engineer Nikola Tesla experimented with long-range wireless energy transfer, but his most ambitious attempt - the 29m high aerial known as Wardenclyffe Tower, in New York - failed when he ran out of money."
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http://news.bbc.co.uk/2/hi/technology/6129460.stm
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