Wobbly Polarity Is Key To Preventing Magnetic Avalanches On Disk Drives Date: July 17, 2007 Source: University of California - Santa Cruz Summary: New research brings models of magnetic avalanches ...

Fluctuations in the magnetic field caused by the movement of metallic material in the outer core have brought about full reversals of the magnetic field's polarity in Earth's past.

Who made the great discovery that if allowed to move freely a magnet pointed north and south is not known, but Peter Peregrinus describes the dual polarity of magnets.

High magnetic field facilitates novel intrinsic ferromagnetic polar metals Peer-Reviewed Publication. Hefei Institutes of Physical Science, Chinese Academy of Sciences ...