WITRICITY Our forefathers marvelled at the invention of glowing light bulbs by

Thomas Edison in 1879. However, to us 21st centurions, the light bulb is

nothing out of the ordinary. When computers, cell phones, laptops, etc.

were invented our antennas tweaked. Now this is what you call invention.

However, as time's progressing we are getting used to these devices. In

fact, charging all these appliances has become very cumbersome. With

each appliance having its own set of chargers, the drawers are

overflowing with all sorts of wires. How many times have you wished if

there could be some way to do away with all the wiry lutter? When you are

on the way to work and your cellphone beeps in hunger for a battery

charge, haven't you wished for your cellphone battery to get 'self charged'.

All that it takes this wish to realize is Witricity or Wireless electricity .

Witricity is the transfer of electrical energy or power over a distance

without the use of wires. It is based on principle of strong coupling

between electromagnetic resonant objects to transfer energy wirelessly

between them. Witricity ensures minimum usage of power cables and

batteries and can be used for devices that need frequent charging.

ref: Andre Kurs; Aristeidis Karalis, Robert Moffatt, J.D. Joannopoulos, Peter Fisher, Marin

Soljačić (July 2007). "Wireless power transfer via strongly coupled magnetic resonances".

Science 317 (5834): 83–86. Bibcode:2007Sci...317...83K. doi:10.1126/science.1143254. PMID

17556549. Published online: June 2007

Shashank kumar

EEE,S7

Roll no­54