Impedance of an absorbing wedge

The surface impedance offered to an external field by a highly absorbing we dge is determined. Over most of a side the impedance is effectively constan t having the same value as if the side were an infinite plane interface. Ne ar the edge, however, this is no longer true. Within a wavelength or so of the edge the impedance exhibits fluctuations and can depart quite widely fr om its constant value elsewhere. The large alteration to the phase as the p osition of the external excitation varies is particularly interesting.