The Chemical Effect of the Spectrum (Classic Reprint)

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Excerpt from The Chemical Effect of the SpectrumBerard made another very interesting experiment. He col lected by means of a lens the rays of the spectrum between the violet and the green, to form a beam of white light, and he proceeded in the same way to produce a brilliant white point by collecting the rays between the yellow and the red: despite the heat of this beam, it had no action on silver chloride, although the exposure was prolonged for two hours. The other beam, although less intense, blackened silver chloride in ten minutes.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.