Download or read book The Rose of the Winds written by Silvanus Phillips Thompson and published by . This book was released on 1913 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Story of Maps written by Lloyd Arnold Brown and published by Courier Corporation. This book was released on 1979-01-01 with total page 463 pages. Available in PDF, EPUB and Kindle. Book excerpt: "An important and scholarly work; bringing together much information available heretofore only in scattered sources. Easily readable." — Gerald I. Alexander, F.R.G.S. Cartographer, Map Division, New York Public Library. The first authoritative history of maps and the men who made them. The historical coverage of this volume is immense: from the first two centuries A.D. — Strabo and Ptolemy — through the end of the 19th century, with some discussion of 20th-century developments. 86 illustrations. Extensive notes and bibliography. "Mr. Brown felicitously marries scholarship to narrative and dramatic skill." — Henry Steele Commager.
Download or read book The Periodical written by and published by . This book was released on 1914 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Rose of the Winds written by Silvanus Phillips Thompson and published by Nabu Press. This book was released on 2014-02 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Rose of the Winds written by Thompson Silvanus Phillips and published by . This book was released on 1901 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Rose of the Winds written by Silvanus Phillips Thompson and published by . This book was released on 2015-08-04 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Rose of the Winds: The Origin and Development of the Compass-Card It is no part of the present paper to enter upon the reasons for the irregularities which are found to exist in the directive force of the earth, and which produce those local 'variations' of the compass which the mariner encounters everywhere. Neither is there here any question considered as to the errors or perturbations due to the presence near the compass of pieces of iron on the ship, nor as to those due to the incidental presence of magnetism in the iron of the ship's hull or fittings; nor, again, as to the means for compensating those perturbations or correcting those errors. The compass, as above described, has remained practically unchanged in all essential particulars for four centuries. The compasses carried by Columbus in his voyages of discovery in the West Indies certainly possessed every one of the features enumerated, save that it is doubtful whether all or any of their thirty-two points were marked with initials, and whether in them the North point bore a fleur-de-lis. As will be seen, probably only six of their points were so marked; and almost certainly there was no fleur-de-lis on any of them. For none of the compass-cards which have yet been identified as of earlier date than 1500 bear a fleur-de-lis; and those of them which bear initials carry only the initials of some of the eight principal winds. The windroses (see Fig.7, Plate Iv), on the Mappamundi drawn in 1500 by Juan de la Cosa, who was pilot for Columbus in 1493, have no fleur-de-lis and no initials. Nothing is more perplexing to the student of the history of the compass than the unhistorical way in which the chroniclers have transcribed and transmitted erroneous statements and unfounded assertions, the truth of which should have been tested. Flagrant errors arising from bad copying, or worse etymology, have been sedulously propagated in the interests of mistaken patriotism; and the invention of the compass has been claimed for many different nations on the most absurd grounds. It may therefore be worth while to set down a few of the more important points as now established: 1. The attractive power of the lodestone was known to the ancients, as appears from the writings of Plato and of Euripides; and it was independently known to the Chinese. 2. The fact that this attractive power could be communicated to iron or steel by the lodestone was known to Lucretius and to the Chinese. 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.
Download or read book Journal of Geophysical Research written by and published by . This book was released on 1915 with total page 666 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book General Catalogue written by Oxford University Press and published by . This book was released on 1916 with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Terrestrial Magnetism and Atmospheric Electricity written by and published by . This book was released on 1915 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rose of the Winds written by Silvanus P. Thompson and published by . This book was released on 2013-10 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rose of the Winds: the Origin and Development of the Compass-Card By Silvanus P. Thompson Excerpt Although the construction of the compass lies outside the scope of this inquiry, some preliminary considerations are necessary concerning the origin of the compass itself; and these must be stated briefly. The mariners' compass, as we know it to-day, consists of a light circular disk or card, beneath which is attached a magnetic needle or system of magnetic needles. The card is provided at its centre with a small cap, by which it is poised movably upon a pin. The whole is enclosed in a hollow box or bowl covered with a flat lid of glass; and the compass box or bowl is suspended within two hinged rings of brass to enable it to conserve its proper horizontal position in spite of any tilting movement to which it is subjected by the rolling or pitching of the ship on which it is carried. The card is divded out into thirty-two 'points' or 'rhumbs' of equal angular breadth forming a rose or star, and to these are affixed the initials of the names of the thirty-two points. The magnet needle, or system of needles, is affixed to the card parallel to the direction marked NS on the card, so that when left to itself, the card, obeying the directive force which acts on the needle, sets itself in a direction pointing (magnetically) North and South; the several 'points' marked on the card then indicating the several directions that the mariner may know in which way to steer in order to follow his desired course. The card is also usually marked at its North point with a fleur-de-lis or other distinctive sign. The magnetic needle is controlled in its pointing by the magnetism of the earth's globe. It is no part of the present paper to enter upon the reasons for the irregularities which are found to exist in the directive force of the earth, and which produce those local 'variations' of the compass which the mariner encounters everywhere. Neither is there here any question considered as to the errors or perturbations due to the presence near the compass of pieces of iron on the ship, nor as to those due to the incidental presence of magnetism in the iron of the ship's hull or fittings; nor, again, as to the means for compensating those perturbations or correcting those errors. The compass, as above described, has remained practically unchanged in all essential particulars for... ------------------------------------------------------------------------------------------------------------------------------------------ Windham Press is committed to bringing the lost cultural heritage of ages past into the 21st century through high-quality reproductions of original, classic printed works at affordable prices. This book has been carefully crafted to utilize the original images of antique books rather than error-prone OCR text. This also preserves the work of the original typesetters of these classics, unknown craftsmen who laid out the text, often by hand, of each and every page you will read. Their subtle art involving judgment and interaction with the text is in many ways superior and more human than the mechanical methods utilized today, and gave each book a unique, hand-crafted feel in its text that connected the reader organically to the art of bindery and book-making. We think these benefits are worth the occasional imperfection resulting from the age of these books at the time of scanning, and their vintage feel provides a connection to the past that goes beyond the mere words of the text.
Download or read book Rare Books and Collections of the Reynolds Historical Library written by Reynolds Historical Library and published by . This book was released on 1968 with total page 558 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes the Reynolds Library's main collection, Daniel Drake Collection, Dental Collection, and its manuscripts and incunabula.
Download or read book The Athenaeum written by and published by . This book was released on 1914 with total page 932 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the British Academy written by British academy and published by . This book was released on 1913 with total page 606 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Chemical News and Journal of Physical Science written by and published by . This book was released on 1914 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Chemical News and Journal of Industrial Science written by and published by . This book was released on 1914 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Chemical News written by and published by . This book was released on 1914 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Athen um written by and published by . This book was released on 1919 with total page 748 pages. Available in PDF, EPUB and Kindle. Book excerpt:
