The  paper of  the  month,  chosen  by  the Editor-in-Chief,  is  "Uniform Analytical Solution for
Scattering by Circular PEC Apertures via Detour-Enhanced Extended BDW Theory"  by M. Altinel and U. Yancin;

DOI: 10.12693/APhysPolA.149.134

Diffraction of waves is typical of all wave phenomena. It has been studied for many years in various contexts. Diffraction of light played a crucial role in the development of modern electrodynamics; presently is one of the most important effects used in the development of laser-related physics, communications and many other optical devices. A typical, though crude, approximation in diffraction theory is based on the Kirchhoff integral, which is often insufficient to capture the effect.

The present paper goes back to a classical problem of diffraction of light by a circular aperture in an infinite perfectly conducting plane. The boundary diffraction wave theory is extended by incorporating both incident and reflected contributions into a single analytical framework; a continuous edge-integral representation across the light-shadow transitions is derived. Smooth angular field behavior and edge-enhanced oscillatory features arising from the combined incident, reflected, and diffracted contributions is found. The paper shows how one can deal with wave propagation in complicated but physically relevant boundary conditions.  

I recommend the paper to all physicists interested in the theory of wave propagation.  

The Editor-in-Chief