- M. Shamos, M. Tavel. 1973. An absorber theory of acoustical radiation. Abstract: An absorber theory of acoustical radiation is developed by analogy to Wheeler‐Feynman electrodynamics. Using a method due to Feynman the acoustic index of refraction for a system of soft spherical scatterers is calculated. The effects of these scatterers on an acoustic source are summed to obtain the usual radiation reaction.
