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Excerpt from Guide to the Selection and Testing of Incandescent Lamps Central stations are in the business of making and selling light. They may sell by the ampere hour, the watt hour, the lamp hour, or by contract, but regardless of the way it is measured, the customer is in reality buy ing and using light. Since the lamp transforms the electrical energy of the generators into light, the best lamp is an absolute necessity to obtain the best light. It is, then, almost a self-evident truth that the exclusive use of the best lamp is the only means of obtaining the best results. The exclusive use of the best lamp involves two condi tions. 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.