Effect of Solar Radiation Upon Balloons (Classic Reprint)

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Excerpt from Effect of Solar Radiation Upon BalloonsIt 1s evident that for any given time the value of C at difierent altitudes could be represented by a curve. Stich a curve is shown in the first part of Fig. 2. Two curves are shown, one gives the values at noon, the other at approximately 8 a. M, or. 4 p. M. Both curves are computed for a July day With sky cloud less, of average clearness and With an average amount of Water vapor and dust present. At earlier or later houts than 8 a. M. And 4 p. M., respectively, the intensity decreases very rapidly between those hours the solar intensity for any given altitude Will be found between the two curves. Accordingly the solar intensity Will usually either be Within the limits set by the two curves or be negligible. The data on the solar constant have been furnished us through the courtesy of the authorities of the Smithsonian Institution, to Whom our acknowledgments are due.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.