Excerpt from A History of Physics in Its Elementary Branches: Including the Evolution of Physical Laboratories It will readily be seen that the above account contains two errors. Hammers of the weights given above will not yield the sounds in question. Nor is the law of weights for strings stated correctly; the pitch of tones varies, not as the weights, but as the square roots of the weights. 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.