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Wavefronts in an inhomogeneous medium with a polynomial inclusion located at the center of the image plane. (a) and (e): wavefronts due to a single point source at (−0.025,0). (b) and (f): closeups of the regions outlined in (a) and (e). (c) and (g): wavefronts due to a single point source at (0.025,0). (d) and (h): closeups of the regions outlined in (c) and (g).
