Catalogue Nr. 35 of Microscopes and Accessory Apparatus (Classic Reprint)

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Excerpt from Catalogue Nr. 35 of Microscopes and Accessory Apparatus The curve given above represents the intensity of the light rays of the solar spectrum, and it will be observed that in being corrected to transmit the rays between the Fraunhofer lines D and F, our lenses yield nearly all the light rays of the spectrum. In the construction of {the Pantachromatics and Apochromatics a still greater degree of perfection has been obtained. In the case of the Pantachromatics greater achromatism has been obtained by the use of borate, phosphate and barite glass, and in the Apochromatics ¿uorite has been added also. 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.