Excerpt from Elementary Lessons in Heat, Light,& Sound These Lessons are intended to serve the purpose of introducing beginners to the study of Experimental Physics. My object has been, not only to provide a certain amount of useful information, but also to give an idea of the methods by which this information can be most directly obtained. The course has therefore been made experimental, and such brief instructions are given as are required for making or using the apparatus and carrying out the experiments. I have repeatedly tried and modified each experiment so as to present it in a simple form and avoid the more usual causes of failure. 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.