Light, Photometry and Illumination

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Excerpt from Light, Photometry and Illumination: A Thoroughly Revised Edition of "Electrical Illuminating Engineering"Chapter IV. - standards OF luminous intensity The English candle - German candle - Carcel lamp - Methven screen - Kerosene standard - Hefner lamp - Pentane lamp - Color value Of ¿ame standards - Violle platinum standard - Relation Of various standards - Arc standard - Black body standard - Radia tion standard - Object Of a primary standard - Incandescent lamp as a comparison standard - Summary of Chapter IV.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.