Wireless Power Comes Again

Aron Schatz
November 15, 2006

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I guess it's that time again. MIT physicists say that wireless power is a reality. Let me know if you don't get any lawsuits about the transmission causing cancer.


Typically, systems that use electromagnetic radiation, such as radio antennas, are not suitable for the efficient transfer of energy because they scatter energy in all directions, wasting large amounts of it into free space. To overcome this problem, the team investigated a special class of "non-radiative" objects with so-called "long-lived resonances". When energy is applied to these objects it remains bound to them, rather than escaping to space. "Tails" of energy, which can be many metres long, flicker over the surface.


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