The Glycerine Barometer

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Excerpt from The Glycerine Barometer: With Plate and Table of Corrections for Temperature Various attempts have been made from time to time to construct barometers with fluids of lower density than mercury, with the view of increasing the range of movement of the column by the direct action of the atmosphere, thereby rendering the variations of pressure more distinctly visible, without the intervention of mechanical appliances. It has been thought that if precise instruments of this class were made, they would prove of much scientific value in showing the character of the more minute barometric fluctuations. At meteorological stations, seaports, collieries, and many other important situations, they would render considerable aid to the unpractised eye in detecting frequently and easily the changes which are continually taking place in atmospheric pressure. Water being the most convenient fluid for a long range barometric column, many water barometers have been constructed, notably that made by Professor Daniell for the Royal Society in 1830. An interesting account of this instrument appears in the Philosophical Transactions for 1832. 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.