Excerpt from Transactions and Proceedings and Report of the Royal Society of South Australia (Incorporated), 1906, Vol. 30: With Twelve Plates and Twelve Figures in the Text The insulation leak is determined by measuring the de flection Of the electrometer first for ten seconds, and then for twenty. With no leak the latter should be double the former. This is never quite the case, and the correction fac tor can be Obtained from a comparison of the two values. The factor to be applied to a ten-second leak varies from about 103 at 40 Degrees C. To about at 70 Degrees C.; at 90 Degrees C. It is much higher. 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.