Harnessing Earth's Power Through Magnetosphere?

  • Context: Graduate 
  • Thread starter Thread starter Rock3tcat
  • Start date Start date
  • Tags Tags
    Magnetosphere
Click For Summary

Discussion Overview

The discussion revolves around the feasibility of harnessing the Earth's magnetosphere to generate power. Participants explore theoretical concepts related to electromagnetic induction and the implications of the Earth's magnetic field behavior.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant questions the possibility of tapping into the magnetosphere for power generation, suggesting that the Earth's core acts like a giant generator.
  • Another participant argues against the feasibility, citing Faraday's Induction Law, which requires a change in magnetic field magnitude or polarity to generate voltage, noting that the Earth's magnetic field flips approximately every 200,000 years.
  • A participant expresses confusion regarding the existence of magnetic flux, seeking clarification on the implications of the magnetic field's stability over long periods.
  • Another participant proposes a theoretical idea involving high-altitude weather balloons dragging wires to create a voltage difference, although they acknowledge a lack of practical means to implement this idea.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the feasibility of harnessing the magnetosphere for power generation. There are competing views regarding the implications of the Earth's magnetic field behavior and its potential for energy extraction.

Contextual Notes

Participants discuss the limitations of current understanding regarding the stability of the Earth's magnetic field and its implications for power generation, as well as the practical challenges of proposed methods.

Rock3tcat
Messages
2
Reaction score
0
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?
 
Physics news on Phys.org
Last edited by a moderator:
Bob S said:
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!
 
Last edited by a moderator:
Rock3tcat said:
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
 
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.
 

Similar threads

Graduate Possible to extract energy from magnetosphere?
  • · Replies 8 ·
Replies
8
Views
3K
Undergrad Is this analogy between Magnetic Force and Gravitational Force accurate in helping to understand what contributes more to a stronger magnetic force?
  • · Replies 11 ·
Replies
11
Views
2K
High School How the Earth's Magnetic field deflects the solar wind
  • · Replies 5 ·
Replies
5
Views
3K
Undergrad An attempt to understand the associated variable conventions in circuits
  • · Replies 1 ·
Replies
1
Views
2K
Graduate PPMT, Magnetic Flux Switch, electro-permanent magnet generator
  • · Replies 8 ·
Replies
8
Views
4K
Undergrad Is this example incorrect in Agawal's book on electric circuits?
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Power Loss Due to An Eddy Current
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Why do pulsars emit radiation from both poles?
  • · Replies 3 ·
Replies
3
Views
3K
Undergrad Neutral wire in electric power distribution between substations
  • · Replies 13 ·
Replies
13
Views
4K
Undergrad Why can current flow from power line to earth ground?
  • · Replies 33 ·
2
Replies
33
Views
8K