Field singularities at metal-dielectric wedges

The wedges discussed are the dielectric wedge, the metallic
90\deg
corner on a dielectric plane, and the adjacent
90\deg
metallic and dielectric corners. The field components perpendicular to the edge may become infinite according to a law (
1/r^{n}
). Numerical data are given for
n
, and plots of lines of force of
\bar{e}
(or
\bar{h}
) are shown.