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From: Neo on 2 Sep 2009 06:23
On Aug 30, 7:20 pm, "DougSlug" <twinu...(a)optonline.net> wrote:
> >> You mean Gen 4? Im not sure on the plugin concept..one more thign toahve
> >> to remember to do/arrange as I see it each nite..
>
> > But that aspect is easily handled.  See this month's issue of Smart
> > Computing and the article about magnetic induction battery charging.  Just
> > drive into the garage and have an induction system "sense" the car and
> > then charge the battery -- no plugs required.  Could be done in parking
> > lots and garages too, of course.
>
> > TKM
>
> Only easy on a conceptual level.  This type of system, although a cool idea,
> would be hugely inefficient.  That is not to say that it couldn't be made to
> work somehow, but it is definitely not a slam-dunk, especially for a large
> scale implementation.  It works OK when the coils are very close together
> and if a relatively low amount of power is needed (like an electric
> toothbrush, which spends 23 hours and 55 minutes a day sitting in the
> charger).
>
> This is the kind of thing Tesla wanted to do (wireless power
> transmission)--and 100 years later, it still hasn't happened.  There are
> good reasons for that, and they're not political.  Even so, Tesla's work led
> to the invention of radio, so it's all good.
>
>  - Doug


I once read in a Popular Science/Mechanic magazine about
electrical generation transmission via guided microwave it
sounded as if it would be electrically inefficient unless it was
for a very short distance. .

Another futurist concept that keeps coming up is a satellite
that generated power from solar arrays and then
transmitted that power (via a laser) back to earth.


What if there was a strong permanet magnetic field along a road
going down hill and there was a vehicle which could travel down
this road with a large coil of wire connected to a battery and motor.
If that vehicle wash pushed downhill along that road the force of
gravity pushed the vehicle's coils through the magnetic fields
at increasing faster rate as the vehicle travelled downhill. The
change in the magnet field would generate an electric current
in the coils that could either power the motor (making it go even
faster) or recharge the batteries in the vehicle. You could also
do the reverse. Put magnets on the vehicle and the coils on the
side of the road as it goes down hill. As the magnet fields
on the vehicle travel downhill it generates electrical currents
in the coils along the road.

Sounds like a neat roller coaster idea... :-)


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