The Influence Of Frequency Upon The Self Inductance Of Coils Classic Reprint

Excerpt from The Influence of Frequency Upon the Self-Inductance of Coils Hence, it is evident that however the frequency of oscillation may change, the mutual inductance between pairs of wires remains absolutely unchanged, while any change which does occur is due to that of the terms involving self-inductance only. This difference is therefore n times the difference between the mutual inductance of two circular filaments when placed at a dis tance apart equal to X radius of the cross section of the wire used, and when placed at a distance apart equal to the radius. For these are the factors used in computing the self-inductance of a turn for low and high frequencies, respectively. Thus, it is easily seen that since in the last case the self-inductance is less than in the first the in uence of rapidly oscillating currents is to diminish the coefficient of self-inductance. 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."

Excerpt from The Influence of Frequency on the Resistance and Inductance of Solenoidal Coils The table on page 170 shows to what extent the values calculated by the various formulas, for the per cent change in resistance, differs from the experimental values. From the table it can readily be seen that none of the formulas derived by the various investigators agree with experimental results. 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.

Excerpt from Calculation of the Self-Inductance of Single-Layer Coils The values of the constant B are given in Table VIII with 72 the total number of turns in the coil as argument. By means of these two tables and equation (27) it is easy to find the correction for any particular case, as the following illustrations will show. 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.

As a slag heap, the result of strip mining, creeps closer to his house in the Ohio hills, fifteen-year-old M. C. is torn between trying to get his family away and fighting for the home they love.