Naked Science Forum

General Science => General Science => Topic started by: AndroidNeox on 15/12/2015 08:00:03

Title: What process generates Earth's magnetic field?
Post by: AndroidNeox 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?

Title: Re: What process generates Earth's magnetic field?
Post by: chris 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