----- Original Message -----
From: "David Nelson" <[email protected]>
To: "Electric Vehicle Discussion List" <[email protected]>
Sent: Monday, December 24, 2012 11:02 PM
Subject: Re: [EVDL] power generated by passing a wire through a
magneticfield
I have work in this magnetic air detection system from 1950 to the 70's.
Magnetic Air Detection or some times call Magnetic Anomaly Detector which is
use by geologist to map the formations of oil and ore deposits in the earth.
I work as a technician on this equipment which is either air board in
aircraft and in vehicles running over the surface of the ground that was
first detected by the aircraft unit.
Yes, the magnetic field is weak where it read on the instruments as
0.000 000 000 001 ampere or at that time as 1 micro micro amp. The
equipment amplified this magnetic signal which could run small motors which
turn the axles of a three plane gimbal.
In the center of the gimbal is a small fiber tube that had a coil of about
40 gage motor magnet wire. This was the pick up tube that when rotated,
pass through the magnet field of the earth which then polarized this unit.
The anomaly's in the earth which interacted with the earths magnetic field
will cause the gimbal to rotated and give a direction and depth of the
deposits.
We are talking of multi-million of dollars of equipment to do this work.
When I went to school on this science, the instructor brought a aluminum
wire that was 36 inches long with a 90 degree bent 4 inch with a aluminum
tube slid over it to form a handle. Holding it in his hand dipping it
slightly so it would swing straight forward.
He walk across the room and it rotated in another direction. He told some
one to turn off the lights and it swing straight forward again. What happen
here the rod became polarized when passing through the earths magnetic
field. As the instructor walk under a fluorescent lamp, the rod rotated in
parallel with it and you will learn how this science works.
Roland
> On Sun, Dec 23, 2012 at 3:05 PM, EVDL Administrator <[email protected]>
> wrote:
> [snip]
> > None of their teachers has ever taught them about conservation of
> > energy - I
> > mean REALLY taught it, with examples to demonstrate. They can't grasp
> > the
> > concept intuitively, so it just isn't part of their world.
> [snip]
> > I really don't have any other answers to this. It's a fundamental
> > problem
> > related to execrably, irresponsibly poor education. I don't think you
> > can
>
> Those are quite strong words, David. Believe me, I have tried for many
> years (24 now) to teach my Physics students and also those who are not
> in Physics the concepts. I've done demonstrations, had the students do
> experiments, and a host of other things and still I get students who
> don't get it. I don't think I fall into your "None of their
> teachers..." statement. Be careful with those absolute type of
> statements, they are almost certainly wrong at some point. Also, it is
> pointing at one piece of the system as the problem rather than looking
> at the whole thing. Until the entire society gets behind the needed
> changes it is extremely unlikely you will see much change in people's
> grasp of concepts like the conservation of energy.
>
> If any one thinks otherwise I challenge that person to teach in the
> k-12 system for a full 5 years before passing judgement. I'd be
> willing to wager that the majority of people will quit by then.
>
> That being said, the best thing to do after using the bicycle
> generator, where the 12V SLI battery gets its energy, etc. is to have
> the person go build one and see for them selves what happens. When
> they have their prototype running then they can come back and show you
> how well it works.
>
> As for the wire passing through the Earth's magnetic field a simple
> experiment I had my physics students is to get a long extension cord
> and connect each end of one of the wires to a galvanometer. Then have
> a student take a significant section of the wire and spin it like a
> jump rope. They were to do this along different directions to find the
> one which deflected the needle the most. Note that a galvanometer
> measures very small currents and the needle did not deflect very much.
> It wouldn't take much to convince you that the wire in a car idea
> won't likely even generate enough energy to compensate for the extra
> mass. Furthermore, the current in the wire will move in a direction so
> as to oppose the motion of the wire it self which will further slow
> the vehicle requiring more energy to propel it.
>
> --
> David D. Nelson
> http://evalbum.com/1328
> http://2003gizmo.blogspot.com
> http://www.levforum.com
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