Jamie's Blog

Thursday, June 07, 2007

Power without wires or batteries


A team of scientists led by Prof. Marin Soljacic, from MIT, have demonstrated a working method of transmitting power wirelessly using a system known as electromagnetic resonance. Transmitting power wirelessly is not new, but using electromagnetic resonance to do so is. All previous methods of power transmission involved using radiation in some form. Most commonly radio waves. But since radiation tends to go all directions, it isn't very efficient and tends to waste a lot of power. Other methods such as magnetic induction required very close, almost touching, proximity. This method is unique, in that the distance can be quite a ways away. say, across the room.
Soljacic says he envisions a day when wires and batteries are unnecessary. Maybe one day you and I will be able to power your whole house without wires.

Physorg article: Goodbye wires... MIT experimentally demonstrates wireless power transfer

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