If wireless power were possible would you invest in the idea? Students at MIT have tested the impossible thought, and they say it is possible to transfer power ‘wirelessly’. Think of it, no more wires to charge your mp3 players, cellphones, laptops, alarm clocks etc. A team from MIT’s Department of Physics, Department of Electrical Engineering and Computer Science, and Institute for Soldier Nanotechnologies (ISN) has experimentally demonstrated an important step toward accomplishing this vision of the future. While the concept does seem to be futuristic, a scientist from the 1900 had developed and tested this theory. His name.. Nicola Tesla!
Radiation methods
Various methods of transmitting power wirelessly have been known for centuries. Perhaps the best known example is electromagnetic radiation, such as radio waves. While such radiation is excellent for wireless transmission of information, it is not feasible to use it for power transmission. Since radiation spreads in all directions, a vast majority of power would end up being wasted into free space. One can envision using directed electromagnetic radiation, such as lasers, but this is not very practical and can even be dangerous. It requires an uninterrupted line of sight between the source and the device, as well as a sophisticated tracking mechanism when the device is mobile. Continue reading »







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