Luminous Radiation from a Black Body and the Mechanical Equivalent of Light (Classic Reprint)

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Excerpt from Luminous Radiation From a Black Body and the Mechanical Equivalent of LightThe visibility curve of the average eye gives a 'value for the least mechanical equivalent of r lumen 0001627 watt of luminous ¿ux of maximum luminous efficiency. The i two determinations of the least mechanical equivalent of light made by Ives, Cob lentz, and Kingsbury are corrected. The values obtained by their two methods of measurement, using 61 observers, are in exact agreement, giving 1 lumen watt.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.