Stochastic electrodynamics and random electrodynamics are the names given to a particular version of classical electrodynamics. This purely classical theory is Lorentz’s classical electron theory(1) into which one introduces random electromagnetic radiation (classical zero-point radiation) as the boundary condition giving the homogeneous solution of Maxwell’s equations. The theory contains one adjustable parameter setting the scale of the random radiation, and this parameter is chosen in terms of Planck’s constant,h = 2πℏ. Many of the researchers(2–70) working on stochastic electrodynamics hope that it will provide an accurate description of atomic physics and replace or explain quantum theory. At the very least the theory makes available new tools for calculating van der Waals forces, and it deepens our understanding of the connections between classical and quantum theories.(71)