Leitfaden der praktischen Optik

Abstract

OF the making of German optical text-books there is no end and there are perhaps few which do not constitute valuable additions to optical literature. The present volume, however, does not pretend to furnish new, material, and it is improbable that it will be found of any special interest to opticians in this country. It is, indeed, not easy to gather for what lass of reader the work has been designed. The preface suggests that the mathematical knowledge assumed in the ordinary treatises on optical instruments is usually lacking to the practical optician, and that it seemed a not altogether fiselels task to xplain the principles of the theory of optical instruments, their construction and design, on the basis of an acquaintance with mathematics not extending beyond the first elements of algebra. Thus should the practical optician be provided with matter he could digest and the student with a stepping-stone to the treatises aforesaid, not the least useful among which are the author's own “Lehrbuch der geometrischen Optik” and his text-books on special departments of optics.

Leitfaden der praktischen Optik.

By Dr. Alexander Gleichen. Pp. viii + 221. (Leipzig: S. Hirzel, 1906.) Price 5.60 marks.