View source for Coulomb interaction

Written by [[Yuhang Jin]], AP225 2011 Fall.

== Introduction ==

Coulomb interaction is the electrostatic interactions between electric charges, and follows the [[Coulomb's law]], which is a basis of [[classical electrodynamics]]. In general, Coulomb interaction can manifest itself on various scales from microscopic particles to macroscopic bodies. The microscopic theory of Coulomb interaction has been developed in the frame of [[quantum field theory]].

== Basic formulae ==

The electrostatic interaction of two point charges <math>q_1</math> and <math>q_2</math> is described by the Coulomb's law:

<math>\mathbf F=\frac{1}{4\pi\varepsilon_0}\frac{q_1q_2}{r^2}</math>,

where <math>\mathbf F</math> is the electrostatic force, <math>r</math> denotes the distance between the two charges, and <math>\epsilon_0</math> is the [[vacuum permittivity]].





== Keyword in references: ==

[[Photonic Properties of Strongly Correlated Colloidal Liquids]]