Video: Earth's wandering magnetic field
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.
Provided by European Space Agency
Citation:
Video: Earth's wandering magnetic field (2013, November 26)
retrieved 26 April 2024
from https://phys.org/news/2013-11-video-earth-magnetic-field_1.html
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