What process generates Earth's magnetic field?

  • 1 Replies
  • 720 Views

0 Members and 1 Guest are viewing this topic.

*

Offline AndroidNeox

  • Sr. Member
  • ****
  • 259
    • View Profile
What process generates Earth's magnetic field?
« on: 15/12/2015 08:00:03 »
To have a net magnetic field, there needs to be a net electrical current. Spinning liquid metal, or anything, has no net current unless there's charge separation. Is the central core at a different voltage than the mantle? Does some aspect of the turbulence pull charge from one material to be carried away by another, e.g. electrons from metals captured in silicates?

*

Offline chris

  • Neilep Level Member
  • ******
  • 5389
  • The Naked Scientist
    • View Profile
    • The Naked Scientists
Re: What process generates Earth's magnetic field?
« Reply #1 on: 15/12/2015 08:58:04 »
We've touched on this previously; here's a link to the earlier discussion:

http://www.thenakedscientists.com/forum/index.php?topic=51226.0

Chris
I never forget a face, but in your case I'll make an exception - Groucho Marx