Author: Henry L. AbbotPublisher: Forgotten Books
ISBN: 9780331756548
Category : Science
Languages : en
Pages : 26
Book Description
Excerpt from Climatology of the Isthmus of Panama General considerations. - The geographical position of the Isthmus of Panama is about 9 north latitude. From this position it follows that the sun is in the zenith at noon twice a year; it is on the northern side between the 13th of April and the 29th of August. Its altitude above the north horizon on the day of the summer solstice is 75 41' and its altitude above the south horizon at the winter solstice is 57 It transmits to the surface of the earth the maximum possible amount of heat on April 13 and August 29. The amount of heat coming from the sun is in proportion to the sine of the angle made by the solar rays with the horizon; that is to say, to the numbers and at noon at the time of the maximum and at the two periods of summer and winter minima, respectively. This shows the very small differences in the quantity of heat received day by day dur ing the entire year. But the temperature of the air does not depend solely upon the quantity of heat coming from the sun, it is also necessary to consider the amount lost by radiation and the effects of many local conditions, and these may vary according to place and from one day to another. Among these conditions the motions of the atmosphere and the quantity of aqueous vapor are general and powerful factors. 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.
