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B Compass below earth surface

  1. Jul 9, 2016 #1
    since magnetic field lines form closed loops , field inside earth must be due geographic south
    will compass below earth's surface point to geographic south?
  2. jcsd
  3. Jul 9, 2016 #2


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    The first figure on the Wikipedia page on the Earth's magnetic field should answer your question. The magnetic field inside the Earth is much more complicated than a dipole field.
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