Excerpt from Avery's Physical Technics and Teacher's Hand-Book, to Accompany the First Principles of Natural Philosophy and the Elements of Natural Philosophy: Containing Solutions to Problems, Descriptions of Inexpensive and Home-Made Apparatus, Many Simple Experiments, Practical Suggestions, Additional Problems and Other Matter Concerning Topics Considered in the Text-Books, Etc, , EtcTo accompény avery's 'natural philosophies, containing soim l Problems, Additional Experiments, Practical Suggestions, eta.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis 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.