Re: New invention from MIT

On Fri, 02 Feb 2007 03:19:55 -0800, The Phantom <phantom@xxxxxxx>
wrote:

Or, The State of Technical Literacy in the US

Did anybody see this small announcement in EE Times, and now in Scientific
American?

"To recharge portable electronics, scientists hope to perfect a method for
transmitting electrical energy wirelessly. The effect, which has not yet
been demonstrated, would take advantage of induction, in which a varying
magnetic field can induce electrical flow in a nearby conductor. To boost
the range and power, Massachusetts Institute of Technology researchers
propose introducing a short gap in a metal loop and attaching two small
disks at each end. When electrified, such an object has a natural
frequency that results from current flowing back and forth along the loop
from one disk to the other. If a second loop has the same frequency, it
should be able to receive energy from the other through the magnetic field.
From a few meters away, the rate of energy transferred might reach tens of
watts, or enough to power a laptop, according to simulations presented
November 14 at a meeting of the American Institute of Physics."

As Winfield would say, "Sheeesh!"

They're going to take advantage of induction, eh? What a great idea!

They've only simulated the concept so far; no hardware yet, apparently.

I hope they try standing near their laptop as it
receives tens of watts through a distance of a few meters.

EE Times has a page where they announce one or two such stunning
breakthroughs every week. I can't recall one of them ever becoming a
real product.

John

.

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