A Comparison of the Formulas for the Calculation of the Inductance of Coils and Spirals Wound With Wire of Large Cross Section (Classic Reprint)

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Excerpt from A Comparison of the Formulas for the Calculation of the Inductance of Coils and Spirals Wound With Wire of Large Cross SectionIn a recent paper Doctor Snow (1) has derived a formula for the calculation of the inductance of a helical coil wound with wire of any desired cross Section, and has illustrated its use both for round wires and for wires of rectangular cross section. Snow's formula is very accurate, since no terms greater than those of the fourth power in the ratio of pitch of the winding to the radius of the winding form have been neglected. It also takes into account the helical shape of the winding, and thus allows for the effect of the axial component of the current in contributing to the magnetic field. This is true of no other existing formula, so that Snow's formula is able to serve as a standard in investigating the accuracy of other formulas for the inductance of a solenoid.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.