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Question about columbs law.

  1. Jul 21, 2010 #1
    how columb knew that the force between the charge is inverse square law in nature
  2. jcsd
  3. Jul 21, 2010 #2
    With careful measurements with the use of a torsion balance () he saw it was ~1/r². Today we've tested that the power of r is exactly 2 to about 15 decimals or so.
    Last edited by a moderator: Sep 25, 2014
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