Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

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
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook