Practical Work in Physics, Vol. 3

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Excerpt from Practical Work in Physics, Vol. 3: For Use in Schools and Colleges, Light and Sound AN essential feature in the four parts Of Practical P/zysz'cs for Se/zools and Colleges, Of which this is the third, is to Offer a fairly complete experimental course in the ground covered at but a tri¿ing cost. The apparatus required is inexpensive, and may be readily Obtained or easily made from the ordinary stock Of a Chemical Laboratory. In addition to what is stated in the Introduction to the first part, it may be remarked that the subjects, here treated Of, do not appeal so much to the student's power Of Observation as to that Of his judgement. In most Of the experiments in Light he has to decide what is to him the most definite image of an Object, in Sound what the nearest approach to unison between two musical notes. In the latter case accuracy depends chie¿y on his physiological perception Of tone, which varies considerably in different persons. In the author's experience only five per cent. Of the students he has had to deal with have so little ear for music that the experiments in Sound for them are not possible. 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.