for scene 17 of the video " Ice Age 2050s: Certainty 2" by Rolf Witzsche
here for a larger image
The magnetic effect of the spinning of the Earth
The magnetic effect of the spinning of the Earth, by the principle of magnetic fields, causes the magnetic field lines to be formed along the spin axis of the Earth. If no other factors are applied, the Earth magnetic North Pole becomes identical with the Earth geographic North Pole.
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Published by Cygni Communications Ltd.
North Vancouver, BC, Canada - (C) in public domain - producer Rolf A. F.