A Treatise on Electricity and Magnetism, Vol. 2
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| Partner: | buecher.de |
| Hersteller: | Forgotten Books (Mascart, E.) |
| Stand: | 2015-08-04 03:50:33 |
Produktbeschreibung
Excerpt from A Treatise on Electricity and Magnetism, Vol. 2: Methods of Measurements and Application 656. Principal Kinds of Measurements. - The various magnitudes which are met with in physical measurements may all be referred to the three fundamental mechanical units - the units of length, of mass or weight, and of time. We need not dwell here on the measurement of rectilinear lengths, nor on that of weight; these are the most frequent physical operations, and they present no particular difficulty when we do not attempt to reach the ultimate limits of accuracy. We shall restrict ourselves to mentioning some of the corrections which they necessitate. The scale used for measuring lengths is ordinarily divided in millimetres. Whatever may be the value of the divisions, fractions of divisions are estimated either by a vernier or by a micrometric telescope. It is clear that the accuracy of any particular mode of subdivision cannot exceed the accuracy with which the scale has been graduated. 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.
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