Scientists at the Massachusetts
Institute of Technology (MIT) Cambridge, US, have
managed to light a 60-watt light bulb from an energy source
seven feet away. They hope the system can be adapted to charge
mobile phones, MP3 players, laptops and other appliances. The
technology is being dubbed WiTricity by the scientists.
Nicola Tesla demonstrated the potential over 100 years
in Colorado Springs in 1899 by
lighting 200 light bulbs - from 26 miles away.
The new approach involves two coils joined by an invisible
resonating magnetic field with one coil attached to a power
source acting as a sender unite, the field resonates with a
One coil attached to a power source acts as a sender unit and
the field resonates with a receiver coil, inducing a current to
flow through it.
Professor Peter Fisher, who helped to conduct the
As long as the laptop is in a
room equipped with a source of such wireless power, it would
charge automatically, without having to be plugged in. In
fact, it would not even need a battery to operate inside of
such a room.