February 8, 2011

Earth's magnetic field

A sketch of Earth's magnetic field. Shows that...Image via WikipediaA sketch of Earth's magnetic field.

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  • Earth's magnetic field - "Earth's magnetic field (and the surface magnetic field) is approximately a magnetic dipole, with the magnetic field S pole near the Earth's geographic north pole and the other magnetic field N pole near the Earth's geographic south pole." - Wikipedia
  • Geomagnetic reversal - "A geomagnetic reversal is a change in the orientation of Earth's magnetic field such that the positions of magnetic north and magnetic south become interchanged... These events occur on a scale of tens of thousands of years or longer, with the latest one ... occurring 780,000 years ago." - Wikipedia
  • North Magnetic Pole - Wikipedia
  • South Magnetic Pole - Wikipedia
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