Excerpt from International Projectionist, 1959, Vol. 34 The anode layer of dense carbon gas may be considered as a sort of heat-transferring mechanism which turns the kinetic energy of electrons into heat and then transfers the heat energy to the solid, positive carbon. The crater thereby becomes hot enough to radiate a white light which is bright enough to make possible the projection of motion pictures on large theatre screens. 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.