MIT researchers have been working on wireless power longer than most (Nikola Tesla aside), and it looks like they've now made a somewhat surprising discovery that could lead to more efficient wireless power. In addition to reducing the size of the transmitters and receives used in their system to something approaching practical, the researchers found that the system's efficiency at transmitting energy increased "significantly" if multiple devices are charged at the same time. What's more, while the amount of power transmitted in the latest experiment only amounted to 100 watts, MIT's André Kurs says that is only limited by the amplifier used for the transmitting coil, adding that the system could easily "feed power to a medium-sized room and power a dozen devices."

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MIT researchers demonstrate more efficient wireless power