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7 answers

Yes, but mother Earth may not like it since it has a very weak magnetic field.

2007-12-22 02:19:35 · answer #1 · answered by Edward 7 · 2 1

Yes, in a sense.

Earth's magnetic field cannot generate energy by itself.  It is, for all intents and purposes, a static (unmoving) field, and generators make electricity only from MOVING (or changing) magnetic fields.  All the "free energy" schemes fail.

You CAN use Earth's field as the field magnet for a generator.  You can spin a coil and generate a small voltage as the field through the coil changes directions (because the coil itself changes direction).  This isn't very useful because the voltage is so small.

One proposal for satellites is to extend a wire up or down so that it cuts through Earth's field (at orbital speed) and generates a voltage; if the circuit is completed through the plasma which surrounds Earth, a current can flow and generate power.

(Don't believe it?  It actually happened, and electric arcing from bad insulation is what caused the loss of NASA's Tethered Satellite System (TSS).)

2007-12-22 10:50:35 · answer #2 · answered by Engineer-Poet 7 · 2 0

Yes-

The theory is run a wire up to satellites to take advantage of the change in electromagnetic radiation. At this time, the materials to create the wires has yet to invented. In addition the logistics of putting a stationary object that extend from the ground to orbit has yet to be worked through.

Cheers and good luck!

2007-12-22 11:14:40 · answer #3 · answered by rutgersgroup 4 · 0 0

I don't see why not although, earth's magnetic field is about half a gauss or 0.5E-4 Teslas, I doubt it would be wise to live off of such a small quantity of energy. And besides there is no way of inducting this large magnetic field to give energy as the energy would be contained by drifting particles.

2007-12-22 10:24:42 · answer #4 · answered by (Ω)Carlos S 2 · 0 2

We do, the only reason magnets work is because of the earth's magnetic field, they would not work in space. And the most fundamental electricity generators use magnets to induce a current (hence the term electroMAGNETIC induction).

I highly doubt that this type of energy production will become any more efficient though if that helps.

2007-12-22 10:19:35 · answer #5 · answered by Anonymous · 0 3

The earth's magnetic field is very weak and steady. It requires a time varying magnetic field to produce a voltage.

2007-12-22 12:47:47 · answer #6 · answered by Dr. R 7 · 1 2

Yes, you can do it

here is people extracting power from the electromagnetic cavity of our planet, the Schumman cavity:


http://radiantenergy.tk


They get a lot of kilowatts using single antennas



Bye

2007-12-22 20:22:13 · answer #7 · answered by Energratis 4 · 0 2

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