Excerpt from Physical Laboratory Manual This manual has been adapted particularly to the present equipment and requirements of a course in experimental physics in Harvard College known as Physics C. This course is accompanied by a series of illustrated lectures to the class as a whole, two each Week, and one hour each week of recitation and problem work to the class in small sections. A knowledge of algebra and plane geometry, and a slight acquaintance with the notation of trigonometry are necessary. Familiarity with the use of logarithms or the slide rule is strongly recommended for reducing the labor of computation. The course should properly be preceded by a more elementary course in physics. Small type has been used for a few descriptive and explanatory sections of the text which are not immediate parts of the specific directions of the experiments. The small type does not, however, signify relative unimportance of the material. Introductory remarks setting forth the application of the principles involved precede each experiment or each group of experiments involving the same principles. In writing this manual, some material, for which much indebtedness is expressed, has been freely taken from Professor Sabine's Laboratory Course in Physical Measurements. For two reasons a revision of this book has become necessary. The distribution of time in Physics C has been so altered that the laboratory work now occupies a shorter time than formerly, and the exercises have therefore become unduly long. It is also desirable to include a wider variety of experiments in the manual, so as to fit the somewhat different needs of the various classes of students who use it. In the course of the revision many experiments have been altered, where experience has shown this to be advantageous, or on account of changes in the apparatus. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.