Elementary Lessons In Heat Light Sound Classic Reprint PDF Download

Excerpt from Elementary Lessons in Heat The preface to the first edition of this book read as follows: "These lessons have been prepared to meet the necessities of a very short course of study at the Military Academy in this branch of physics, a course so short that it can command for study and recitation only about seventy hours from the cadets. "In selecting the material, I have been guided by the consideration of what is applicable to the subsequent courses of study at the Academy and also of what is essential and most useful for the student to know. In the arrangement I have kept in view facility of acquirement and thorough understanding, and, accordingly, the logical connection of the facts and principles set forth. "In the exposition of the subjects treated, I have aimed at clearness and conciseness, and have omitted detailed descriptions of investigations and of apparatus as entirely as is consistent with the foregoing objects. Most of the experimental illustrations described or referred to are such as can be performed in the lecture-room." The preface to the second edition contained this statement: "In the use of the book experience has shown that many of the subjects touched upon are pregnant with suggestions to the pupils, and there is a great temptation to treat them more fully; but the object for which the lessons were prepared and the time that can be devoted to them, as stated in the preface to the first edition, are barriers to a more extended treatment, or to a different apportionment of space to the subjects treated." The same necessities, conditions and objects as set forth in the above extracts have been the governing factors in this revision for the third edition, and they have prescribed the same limitations and general treatment as in the previous editions. 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.