Excerpt from Household Physics Household Physics was written primarily for girls. The principles of physics in such a book are of course the same as in a text-book for boys or for mixed classes. But in Household Physics these principles are applied in such a way as to interest girls, by using examples and references with which they are thoroughly familiar. The work was developed in the classroom. At first the author used an outline, filling in with applications and drawings in the recitation periods. The following year the text was written and mimeograph copies put into the hands of the students. After this material had been carefully worked over with various classes, it was revised into the present book. The subject of Heat is taken up first, since it is one which has many applications of vital importance to the household. Thus the girl becomes interested in physics from the first, and looks forward to recitations with pleasure. The language of the book has been kept as simple as. Possible throughout. The topics are carefully explained and these explanations are illustrated by a wealth of line drawings and photographs. The problems are especially easy and practical. The author wishes to take this Opportunity to thank the several industrial concerns which supplied many of the photographs, and also those teachers and pupils who so kindly assisted him in bringing the work to completion. 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.