Video: Earth's wandering magnetic field

November 26th, 2013 in Earth / Earth Sciences

Earth's magnetic field is continuously changing.

Magnetic north wanders, and every few hundred thousand years the polarity gradually flips, so that a compass would point south instead of north.

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Provided by European Space Agency

"Video: Earth's wandering magnetic field." November 26th, 2013. http://phys.org/news/2013-11-video-earth-magnetic-field_1.html