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What property of a magnet determines which side of it is N or S?

  1. Feb 15, 2008 #1
    What property of the magnet determines which side of it is North and which side is South?

    I know that we are unable to separate the poles of a magnet (ie cut a magnet in halves and we get two magnets). How come?
  2. jcsd
  3. Feb 15, 2008 #2
    A magnet bar consists of numerous tiny magnets (perhalf molecular scale), so you can not separate it into 2 one-pole magnets.
    The poles of a magnet allign with the poles of all the tiny magnets.
  4. Feb 15, 2008 #3


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    Gold Member

    Let's just say that if you ever manage to isolate a magnetic monopole, you will own the planet... until Disney buys you out.
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