From fundamental concepts of electromagnetic theory a mathematical development on the forces between radiating bodies is presented. A method is developed that evaluates the stationary volume energy density as a function of particle separation. A rudimentary description of particle scattering yields data that correspond to the sinusoidally varying force that has been shown to act on particles under intense illumination as a Function of their proximity. (C) 1998 Optical Society of America [S0740-3224(98)01105-9]. [References: 21]
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