Excerpt from A Radioactive Gas From Crude Petroleum A Radioactive Emanalz'on. - On first introducing into the cylinder the air which had passed through the oil, it was found to have an initial conductivity very greatly in excess of that of normal air. Its conductivity steadily increased, after the cylinder was closed, 4 r about three hours, when it reached a maximum value, after which it slowly decreased approximately in a geometrical progression with the time. Fresh air passed through diflerent samples of petroleum ...
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Excerpt from A Radioactive Gas From Crude Petroleum A Radioactive Emanalz'on. - On first introducing into the cylinder the air which had passed through the oil, it was found to have an initial conductivity very greatly in excess of that of normal air. Its conductivity steadily increased, after the cylinder was closed, 4 r about three hours, when it reached a maximum value, after which it slowly decreased approximately in a geometrical progression with the time. Fresh air passed through diflerent samples of petroleum into the cylinder under exactly similar conditions was found to possess different initial conductivities, but, in every case, the conductivity of the con fined air steadily rose in about three hours to a maximum about 40 per cent. In excess of the initial value. It then decayed according to an exponential law, always dropping to'one-half value in about days. A typical set of observations on the conductivity of air bubbled through one of the samples of oil is given in Table I, the time being reckoned from the moment when the cylinder was closed. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at ... 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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