Transmission of Power via Long Range Induction

Wireless powerThis demonstration never fails to be a crown pleaser. However, this one was quite a bit more practical.

The idea of transmitting energy wirelessly isn’t new. For almost two centuries, scientists have known that rapidly changing magnetic fields, such as those produced by an alternating current flowing through a wire, can induce an electric current in another wire. That’s how the coils inside power transformers transmit energy from one coil to another without touching. But this form of induction usually works efficiently only when the two coils are very close to each other.

[via boingboing]
The Power of Induction: Science News Online, July 21, 2007

Posted: July 25th, 2007
at 8:08am by John

Categories: Mad Science,Technology


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  1. Hi! I want to ask if you will provide a link back to my site OR link exchange?
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    Alex Vorn

    28 Jul 07 at 3:04 pm


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