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--- 184_notes:perm_mag [2021/06/16 18:48] – [Magnetic Field from a Bar Magnet] bartonmo
+++ 184_notes:perm_mag [2021/06/16 18:50] – bartonmo
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 ===== Measuring Earth's Magnetic Field and other Magnetic Fields =====
 One of the most important magnetic fields (that we actually model as a giant bar magnet) is [[https://en.wikipedia.org/wiki/Earth%27s_magnetic_field
-|Earth's magnetic field]]. Geophysicists believe that the source of the Earth's magnetic field are currents generated in conductive material in the Earth's core. This is particularly important when we are trying to measure a magnetic field, since all measurements are taken on Earth and will (in some way) have to include Earth's field. We have already mentioned that Earth's magnetic field is relatively small at ~$10^{-5}T$. If the magnetic field that you are measuring is large, then Earth's magnetic field may be negligible; however, if it is small, you may need to consider Earth's field more carefully in your considerations.
+|Earth's magnetic field]]. Geophysicists believe that the source of the Earth's magnetic field are currents generated in conductive material in the Earth's core. This is particularly important when we are trying to measure a magnetic field, since all measurements are taken on Earth and will (in some way) have to include Earth's field. We have already mentioned that Earth's magnetic field is relatively small at ~$10^{-5}T$. If the magnetic field that you are measuring is large, then Earth's magnetic field may be negligible; however, if it is small, you may need to consider Earth's field more carefully in your assumptions.
 [{{  184_notes:Week9_13.png?200|Direction of earth's magnetic field}}]