Excerpt from Investigation of the of the Quality of Frequency Modulation Produced by a Sinusoidal Variable CondenserWe shall consider first a simple case for obtaining sinusoidal capacity variation which depends on the area of coincidence between two geometrical figures in parallel planes when one is projected upon'the other. This is taken from a paper on An Electrostatic Alternator by Professor e.h. Lyon.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.