Rotating Bodies and Polar Flips

Thanks to Jack for sending me this interesting 15-minute video which looks at bodies rotating in zero-gravity.

Near the end, it goes into the discussion of whether the earth has ever physically “flipped” through its axis of rotation. I don’t think it ever has – nor will it….

Also, we do know from geological records that the earth’s magnetic field flips every few thousand years – and here’s new evidence of this phenomenon: A 40,000 year old fossilized tree that shows evidence of reversal in the tree rings.

www.newsweek.com/ancient-tree-discovered-earths-magnetic-field-1447570

Kauri tree

The kauri tree unearthed during the expansion of the Ngāwhā Generation geothermal power plant. (NELSON PARKER)

 

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