Circular of the Bureau of Standards, Vol. 8

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Excerpt from Circular of the Bureau of Standards, Vol. 8: Testing of Thermometers, Issued June 30, 1911It is well known that the scale of temperature defined by a mercurial thermometer is dependent upon the composition and treatment of the glass. Even samples of glass from the same pot show differences in this respect. Mercury in glass thermometers, although capable of very great precision when properly constructed and used with due precautions, are therefore not suited to establish the standard scale of temperature.International Hydrogen Scale - The temperature scale which has come into almost world-wide use in the interval 3 5° to 100° C is the hydrogen scale of the International Bureau of Weights and Measures, as defined by the 'following resolution of the International Committee on Weights and Measures, adopted October 15, 1887.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis 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.