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=                           Coulomb's law                            =
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                             Introduction
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Coulomb's law, or Coulomb's inverse-square law, is an experimental law
of physics that quantifies the amount of force between two stationary,
electrically charged particles.  The electric force between charged
bodies at rest is conventionally called 'electrostatic force' or
Coulomb force.  The quantity of electrostatic force between stationary
charges is always described by Coulomb's law.  The law was first
published in 1785 by French physicist Charles-Augustin de Coulomb, and
was essential to the development of the theory of electromagnetism,
maybe even its starting point, because it was now possible to discuss
quantity of electric charge in a meaningful way.

In its scalar form, the law is:

:F=k_e\frac{q_1 q_2}{r^2},