With everything going wireless, who would not like to get rid of those bulky wires and adapters to charge electronic goods.
U.S. researchers from Massachusetts Institute of Technology have outlined a simple system bases on old physics.
The system has not yet been created and any other mathematical work has not been done, but if built, the system will be capable of delivering wireless power to devices such as laptop computers or MP3 players.
Assistant Professor Marin Soljacic, the researchers behind the work told that the system will use simple phenomenon called resonance well defined in physics. The only difference being that they will use of electromagnetic waves to tunnel the energy from one object to another with same resonant frequency.
The objects used may be non-radiative ones as they have a long lived resonance that is they are capable of retaining energy to large extent with negligible part lost in free space.
Hence, a simple copper antenna designed to have long-lived resonance could transfer energy to a laptop with its own antenna resonating at the same frequency. The computer would be truly wireless.
This system is not first of its kind as many such similar products had already been designed and implemented in past. Nineteenth-century physicist and engineer Nikola Tesla experimented with long-range wireless energy transfer, but his most ambitious attempt - the 29m high aerial known as Wardenclyffe Tower, in New York - failed when he ran out of money.
A UK company called Splashpower has also designed wireless recharging pads, which could directly charge your gadgets when placed on it.
All these products are just source of inspiration for this new system but they were not much successful as they had a highly directional mechanism and failed in case their line of sight was interrupted.
This system is still at the early stage but with some more efforts and improvements it promises good scope for wireless power technology.
Via: BBC
