Is it over cables ? Wireless Energy-3RD SEASON LOST
Friday, November 17, 2006
Indiana University Hats
The tangle of cables and plugs needed to recharge today's electronic equipment could soon pass into history.
A group of U.S. researchers outlined a system relatively simple to send power wirelessly to devices such as laptops and MP3 players.
The concept is based on a discovery of very old physics and could work at a distance of several meters, the researchers say. Although not yet built and tested a system of mathematics and computer models indicate that it is possible.
"There have been many independent teams in recent years, from cell phones to personal computers, we started thinking it would be very convenient not having to reload," said one researcher, Professor Marin Soljacic, the Massachusetts Institute of Technology (MIT, for its acronym in English).
"And because we are physical, we wonder what kind of physical phenomenon could be used to do this wireless energy transfer." "When you have two resonant objects of the same frequency they tend to couple very strongly," he told the BBC Soljacic.
resonance can be seen, for example, musical instruments. "When you play a sound in one instrument, one that has the same acoustic resonance and vibration obviously gets it." Instead of using acoustic vibrations, the system devised by the researchers is based on the resonance of electromagnetic waves.
information taken from: http://news.bbc.co.uk/hi/spanish/science/newsid_6151000/6151260.stm
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