On The Mechanical Equivalent Of Heat With Subsidiary Researches On The Variation Of The Mercurial From The Air Thermometer And On The Variation Of The Specific Heat Of Water

Author : Henry Augustus Rowland
Publisher : Forgotten Books
ISBN 13 : 9780484108652
Total Pages : 132 pages
Book Rating : 4.1/5 (86 download)

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Download or read book On the Mechanical Equivalent of Heat written by Henry Augustus Rowland and published by Forgotten Books. This book was released on 2017-12-19 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from On the Mechanical Equivalent of Heat: With Subsidiary Researches on the Variation of the Mercurial From the Air Thermometer, and on the Variation of the Specific Heat of Water But Joule experimented on water of one temperature only, and did not reduce his results' to the air thermometer; so that we are still left in doubt, even to the extent of one per cent, as to the value of the equivalent on the air thermometer. The reduction of the mercurial to the air thermometer, and thence to the absolute scale, has generally been neglected between 0 and 100 by most physicists, though it is known that they differ several tenths of a degree at the 45 point. In calorimetric researches this may produce an error of over one, and even approaching two per cent, especially when a Geissler thermometer is used, which is the worst in this respect of any that I have experimented on; and small intervals on the mercurial thermometers differ among themselves more than one per cent from the difference of the glass used in them. Again, as water is necessarily the liquid used in calorimeters, its variation of Specific heat with the temperature is a very important factor in the determination of the equivalent. Strange as it may appear, we may be said to know almost nothing about the variation of the specific heat of water with the temperature between 0 and 100 C. 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.