4 ms·
But a shift in polarisation wouldn't include the field to disappear at any time, would it?
by fataliss 12y ago
But a shift in polarisation wouldn't include the field to disappear at any time, would it?
- gus_massa 12y agoFrom: http://en.wikipedia.org/wiki/Geomagnetic_reversal http://en.wikipedia.org/wiki/Geomagnetic_reversal > During this change the strength of the magnetic field dropped to 5% of its present strength. > The magnetic field will not vanish completely, but many poles might form chaotically in different places during reversal, until it stabilizes again.[