Mirrors, Prisms and Lenses.

Abstract

This book covers essentially the work in geometric optics as given by the author in his courses at Columbia University. To some extent in the previous edition, but especially so in the new edition, important contributions to physical and physiologic optics have been included. In fact, this additional material enlarges the book by 140 pages over the preceding edition. In the 18 chapters, the author covers everything of interest to the ophthalmologist with reference to the action of mirrors, prisms, lenses and combinations of these. Reflection, refraction, dispersion and correlated phenomena by simple and compound optical systems, including the human eye, are adequately treated and generally with a thoroughness not encountered in similar works. After building up elementary working formulas for different optical agents, the author proceeds to unify all into a few general principles. For example, he shows how by the application of the principle of reduced vergences it