ijuset
- Science
Electricity in the Air
Scientists have known for nearly two centuries how to transmit electricity without wires, and the phenomenon has been demonstrated several times before. But it wasn't until the rise of personal electronic devices that the demand for wireless power materialized. In the past few years, at least three companies have debuted prototypes of wireless power devices, though their distance range is relatively limited [see "Power Brokers," next page]. Then last year, a team at the Massachusetts Institute of Technology set the stage for wireless power that works from across a room.
8.8.2008 at 02:40am - Comment by ijusetI disagree with those whom saying system has to be inefficient. Because in close range using the method of induction the efficiency of power transfer was already around 95%. Making a research about improving the distance 15-20 times (7 feet), MIT can sure improve the efficieny with further researching.
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