Re: New invention from MIT

On Feb 2, 8:50 am, John Larkin
<jjlar...@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
On Fri, 02 Feb 2007 03:19:55 -0800, The Phantom <phan...@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.

You're forgetting neural networks. Oh, wait, we've all forgotten
those. How 'bout fuzzy logic?(*)

(*) True story: In line, boarding a plane in the midst of the craze,
two fuzzy evangelicals were arguing a finer point of fuzzy logic.
"Fuzzy logic?" says I, busting in. "Yes!" they replied, welcoming the
fresh meat with carnivorous anticipation. "Ehh ... better than no
logic at all, I s'pose," says myself in turn (nearly bustin' up, I had
to turn to hide an ear-to-ear Cheshire grin). Stoney silence ensued,
a great improvement!

Cheers,
James

.

Relevant Pages

  • Re: Derivation of Heisenberg Uncertainty from Kaluza Klein Geometry
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    (sci.physics.relativity)
  • Re: Collective Electrodynamics by Carver Meade
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    (sci.physics.electromag)
  • Re: Perfect loop
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    (rec.aviation.piloting)
  • Re: RF Exposure from Small Transmitting Loops
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    (rec.radio.amateur.antenna)
  • Re: Is it this easy to live on Mars?
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    (sci.space.policy)