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Author: Charles Hutton
Publisher: Forgotten Books
ISBN: 9781333554521
Category : Science
Languages : en
Pages : 22
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Book Description
Excerpt from On the Mean Density of the Earth Consequently, the whole attraction of the earth, is to the sum of the two contrary attractions of the mountain, as the number 87522720 to 8811 that is, as 9933 to 1 very nearly; on supposition that the density of the matter in the hill, is equal to the mean density of that in the earth. But Dr. Maskelyne found by his observations, that the sum of the deviations of the plumb line, produced by the two contrary attractions, was seconds. Hence then it is inferred, that the attraction of the earth, 'is actually to the sum of the attractions of the hill, nearly as radius to the tangent of seconds, that is, as 1 to 000056239, or as 17781 to 1; or as 17804, to 1 nearly, after allowing for the centrifugal force arising from the rotation of the earth about its axis. 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.
Author: Charles Hutton
Publisher: Forgotten Books
ISBN: 9781333554521
Category : Science
Languages : en
Pages : 22
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Book Description
Excerpt from On the Mean Density of the Earth Consequently, the whole attraction of the earth, is to the sum of the two contrary attractions of the mountain, as the number 87522720 to 8811 that is, as 9933 to 1 very nearly; on supposition that the density of the matter in the hill, is equal to the mean density of that in the earth. But Dr. Maskelyne found by his observations, that the sum of the deviations of the plumb line, produced by the two contrary attractions, was seconds. Hence then it is inferred, that the attraction of the earth, 'is actually to the sum of the attractions of the hill, nearly as radius to the tangent of seconds, that is, as 1 to 000056239, or as 17781 to 1; or as 17804, to 1 nearly, after allowing for the centrifugal force arising from the rotation of the earth about its axis. 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.
Author: J. H. Poynting
Publisher:
ISBN: 9781331946106
Category : Science
Languages : en
Pages : 262
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Book Description
Excerpt from The Mean Density of the Earth: An Essay to Which the Adams Prize Was Adjudged in in the University of Cambridge The subject for the Adams Prize for 1893 was "The Methods of determining the absolute and relative value of gravitation and the mean density of the earth." This Essay, to which the Prize was adjudged, gives an account of the various experiments, including one by the author, which have been made to determine the mean density of the earth. The First Part consists of an introductory discussion of the problem and an account of the experiments hitherto made on the subject. Since the Essay was first written I have had access to some of the original papers, of which I had before only seen abstracts or brief notices, and I have therefore been able to make the history of the subject more complete. The Second Part contains an account of my own experiment which has already appeared in the Philosophical Transactions of the Royal Society for 1891. As it is a condition of the award of the Prize that the Essay should be printed, it is necessary to give here the account of the experiment in full as already published. I have prefixed a bibliography of works and papers containing important or noteworthy contributions to the subject. In this will be found a reference to an experiment by M. Berget, of which the account has been published so recently that it could not be included in the First Part of the Essay. 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.
Author: J. H. Poynting
Publisher: Wentworth Press
ISBN: 9780530567297
Category : History
Languages : en
Pages : 176
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Book Description
This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Author: K. E. Bullen
Publisher: Springer Science & Business Media
ISBN: 9400957009
Category : Science
Languages : en
Pages : 432
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Book Description
The book attempts to draw together the various strands of evidence that have led to present knowledge of the distribution of density throughout the interior of the Earth. Details are also given of other properties with which the density is closely linked, including pressure, compressibility and compression, rigidity, seismic velocities, Poisson's ratio and gravitational intensity. Questions of thermodynamics and chemical composition and phase enter discussions where they bear more or less sharply on the density determination; but the book does not purport to be a comprehensive text on the Earth's internal tem perature distribution and composition. The density distributions of other planets are discussed. The quest for clues on the Earth's internal densities has long been an exciting one, and an aim of the book is to present a developing story which has fascinated the author over much of his worl(ing life. The early chapters refer to key developments from ancient times to around 1930. The later chapters recount, in greater detail, develop ments since 1930. The stage has now been reached where numerous published papers bearing on the Earth's density seem to do little more than fidget around the resolving power of long accumulated observational data. So the present seems an appropriate time to try to put some perspec tive into the story. Of course, the story will never be quite finished: in describing the interior of the Earth, there will always be extra decimal places to add as further significant evidence arises.
Author: John Henry Poynting
Publisher:
ISBN: 9780598397034
Category : Dynamics
Languages : en
Pages : 156
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Book Description
Author: John Henry Poynting
Publisher: Nabu Press
ISBN: 9781294687788
Category :
Languages : en
Pages : 248
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Book Description
This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book.
Author: John Henry Poynting
Publisher: Legare Street Press
ISBN: 9781018004914
Category : History
Languages : en
Pages : 0
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Book Description
This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Author: Edwin Sharpe Grew
Publisher: Forgotten Books
ISBN: 9780332115160
Category : Science
Languages : en
Pages : 406
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Book Description
Excerpt from The Growth of a Planet Water as a moulding influence - The most ancient rocks - Earth stresses - Volcanic outward movements - T he explosive theory of earthquakes - Lines of weakness in the crust of the Earth Volcanoes and crustal movements - Classification of lavas. 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.
Author: Stephen Hawking
Publisher: Cambridge University Press
ISBN: 9780521379762
Category : Science
Languages : en
Pages : 712
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Book Description
A collection of reviews by prominent researchers in cosmology, relativity and particle physics commemorates the 300th anniversary of Newton's Philosophiae Naturalis Principia Mathematica.
Author: Garrett P. Serviss
Publisher: e-artnow
ISBN: 8027247667
Category : Fiction
Languages : en
Pages : 173
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Book Description
This eBook has been formatted to the highest digital standards and adjusted for readability on all devices. The book features Thomas Edison. Set after the devastating Martian attack in the previous story, the novel depicts Edison leading a group of scientists to develop ships and weapons, including a disintegration ray, for the defense of Earth.
