07-08-2012, 12:33 PM
(07-08-2012, 12:00 PM)Robert Darwent Wrote: [The reversal of the Earth's magnetic field] is a slow process over many centuries where the field diminishes, changes polarity, then strengthens again.
I see: a slow process. Thank goodness for that! So references to the Earth's magnetic field 'flipping' is something of an exaggeration then.
Thank you Robert.
Al.
