Power cables and even batteries might become a thing of the past using a new technique that can transmit power wirelessly to cell phones, laptops, MP3 players, household robots and other electronics.
Scientists lit a 60-watt light bulb from a power source 7 feet (2 meters) away with their new technique, with no physical connection between the source and the appliance. The researchers have dubbed their concept "WiTricity," as in "wireless electricity."
MIT physicist Marin Soljacic began thinking years ago about how to transmit power wirelessly so his cell phone could recharge without ever being plugged in. Scientists have pursued wireless power transmission for years — notably, eccentric genius Nikola Tesla, who devoted much energy toward it roughly a century ago.