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The Science Year Book
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Excerpt from The Science Year Book: Diary, Directory, Biography,& Scientific Summary, for 1907 This was completed in I842. It was very pleasing to note that the whole of the machinery, buildings, and everything connected with both of these instruments was done by local artisans and under the immediate superin tendence of the great astronomer, who died October 3ist, 1867. Looking at the original and the modern 3 feet tele scope, we see that many alterations and improvements have been made. Under the present Earl it wears an entirely different aspect to that which it wore in that memorable month of September, 1839. Of late years it has been employed very largely for planetary observations. From 1851 to 1886 the planet Jupiter especially was the object upon which a great amount of attention was be stowed. When it was first completed it was mounted as a Newtonian on an altazimuth stand, but as that was not altogether suitable for observations requiring absolute accuracy, it was afterwards mounted equatorially, which renders it adapted for photographic and spectroscopic work. Here it may be observed that a most important achievement in astronomical science was made by means of this 3 feet re ector. It was for a long time a debated question among scientists, Does the earth receive any heat from the Moon? It was at last decisively settled by the aid of this instrument that lunar heat does enter our atmo sphere, though the amount is extremely small, being about one twenty-thousandth part of a degree and to the labours and observations of the present holder of the title this addition to our scientific knowledge is due. These lunar 'heat observations are still being pursued. Such is a brief account of the history of this remark able instrument, and though not to be compared with its powerful 6 feet neighbour, still it has rendered, and will do so under the present skilful management and direction, ever-increasing help in research into the vast domains of the Universe. 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."
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