The Magnetic Field that made us. Ken Croswell @ScienceMagazine.

from  The John Batchelor Show

Feb 11, 2019

Photo: Computer simulation of the Earth's field in a period of normal polarity between reversals.[1] The lines represent magnetic field lines, blue when the field points towards the center and yellow when away. The rotation axis of the Earth is centered and vertical. The dense clusters of lines are within the Earth's core.[2] View author information Public Domain File:Geodynamo Between Reversals.gif Uploaded: 24 February 2007 The Magnetic Field that made us.  Ken Croswell @ScienceM...more

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