Harnessing Earth's Power Through Magnetosphere?

[Rock3tcat]

Is it possible to tap into the Magnetosphere to generate power? I mean the core of the Earth is in fact a giant generator, so why can't (or aren't) we exploiting this potential?

 

[Bob S]

We can't exploit it. Based on the Faraday Induction Law, there has to be a change in the magnetic field magnitude or polarity to get a voltage out. The Earth's magnetic field flips about once every 200,000 years. See
http://news.nationalgeographic.com/news/2004/09/0927_040927_field_flip.html
Don't wait for it.
Bob S

 

[Rock3tcat]

We can't exploit it. Based on the Faraday Induction Law, there has to be a change in the magnetic field magnitude or polarity to get a voltage out. The Earth's magnetic field flips about once every 200,000 years. See
http://news.nationalgeographic.com/news/2004/09/0927_040927_field_flip.html
Don't wait for it.
Bob S

So you're saying that there is no magnetic flux? I did not know that!

 

[Bob S]

So you're saying that there is no magnetic flux? I did not know that!

I attempted to state that the magnetosphere's magnetic flux did/does/won't change for ~200,000 years.
Bob S

 

[pgardn]

How about some big high altitude weather balloons dragging long wires behind them...

I have no practical way of exploiting this. And the airline industry would love me. Just a strange thought. But theoretically we could get a voltage diff in the wire... I think.