B oak Revietm
"optical" point of view, but the authors intended its application to the whole electromagnetic spectrum. As the treatment is in terms of classical electromagnetic waves the book will net be of much use to people who are primarily interested in quanta, and one hopes that someone will provide a systematic treatment of the same topics seen from the "particle" point of view.
Nevertheless, there are a great many to whom this book will be of interest-those working in radio and in optics. At the present time there are probably more people working in optics than ever before, particularly in the field of coherent and partially coherent optics. The book is therefore not only welcome as an attempt to unify concepts, but is also timely.
It must be remembered that this book is a research monograph and that it treats the subject of partial coherence from a mathematical viewpoint. Thus the information on applications of the theory is very limited and rather too abstract. However, this is not a practical book, but an attempt to present some up-to-date thinking about the theory of partial coherence. In this aim the authors succeed to a large extent, having made a definite and worthwhile contribution to the gtudy of the sort of electromagnetic waves usually dealt with by the experimentalist.