| Point Charge |
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The fundamental Equation of Electrostatics is Coulomb's Law , which describes the force between two point charges. The Electric Field associated with a point charge is infinite at the location of the point charge. Fortunately, a consistent theory of Quantum Electrodynamics developed in part by Richard Feynman removes the need for infinitesimal point charges altogether. Earnshaw's Theorem states that a collection of point charges cannot be maintained in an Equilibrium configuration solely by the electrostatic interaction of the charges. In the Crystal Field Theory , in which ligands surround a central metal ion, the ligands are modelled as point charges, and the interactions between the metal as solely electrostatic. EXTERNAL ARTICLES AND FURTHER READING
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