Excerpt from An Elementary Treatise on Heat In this part many of the most recent investigations, as well as the apparatus used in conducting them, are described at length, while numerical examples are given, which, it is hoped, may enable the student to attain to the accuracy needful in physical research. The second division contains the laws which regulate the distribution of heat through space, and includes radiation, conduction, convection, and the measurements of specific and latent heat. Theoretical views are here for the first time introduced. The third and last part relates to the nature of Heat, its sources, and connexion with other properties of matter. In this part Heat is viewed as a kind of energy, and the leading principles by which Heat becomes related to other forms of energy are discussed. It may be well to state the basis on which the reason ing of this part has been founded. It has appeared to the Author that the foundation which involves the smallest amount of assumption is that adopted by Professor Sir W. Thomson, namely the denial of the possibility of a perpetual motion of any kind, and it will be shewn in the sequel that the denial of one form of perpetual motion in volves the principle of the conservation of energy, ' while the denial of another form involves the principle of the dissipation of energy.' 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.