In this new volume of these Advunces, we have two contributions for the
microscopists, one on mathematical morphology and a concluding chapter on
the Aharonov-Bohm effect in solid-state physics.
We begin with a very new type of optical microscopy, interference scanning optical probe microscopy, to which the author, W.S. Bacsa, has largely
contributed. In this concise account of the technique, he explains why such a
mode of image formation is of interest and then discusses the physics of the
light-matter interaction and of the generation of the image with great care. We
can expect interesting developments in the next few years and I hope that a
further account will appear one day in these pages