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Other editions of book An Investigation of the Rotation Period of the Sun by Spectroscopic Methods

  • An Investigation of the Rotation Period of the Sun, by Spectroscopic Methods

    Walter S. Adams

    Hardcover (Forgotten Books, Feb. 7, 2018)
    Excerpt from An Investigation of the Rotation Period of the Sun, by Spectroscopic MethodsAll of the preceding determinations of the rotation period of the sun, with the exception of that Of Jewell, have been based on visual observations. While it is probable that the photographic method does not possess for such an investigation the overwhelming advantages which it has in the case of faint and difficult spectra, it has certain points of superiority which render an independent determination by its aid of the greatest value. Two Of these are especially important. The Visual determinations have been based upon a very limited number of lines in the less refrangible part of the spectrum. With the photo graphic method it is possible to employ a much larger number of lines and to utilize the more refrangible part of the Spectrum where the lines are more numerous and the variety of elements which can be employed correspondingly greater. These facts were fully realized at the time Of the establishment of the Mount Wilson Solar Observatory, and plans were made for taking up a photographic investigation of the rotation period of the sun as soon as suitable instrumental equipment was ready. With the completion of the Snow telescope, and the powerful I8-foot Spectrograph used in conjunction with it, a combination of apparatus admirably adapted for the work was available, and accordingly in the spring of 1906 the first observations were begun. These were continued until June, 1907, after which all Observational work on the rotation of the sun was transferred to the tower telescope.Since the investigation was commenced five series of observations have been made and are discussed in the pages which follow. Two of these deal with lines selected from the spectrum of the general reversing layer, two with the a. Line of hydrogen, and the fifth with A 4227 of calcium. The lines of hydrogen and calcium give results differing widely from those Obtained for the reversing layer, and so, of course, should be treated individually. Moreover, Since the two series of determinations for the reversing layer are separated by a considerable interval of time, and the apparatus employed in the second series was entirely different from that in the first, it seems desirable to treat them separately in the present discussion. Brief accounts of the main results of these two series of observations have already been published, the first in 1907 (to) and the second in 1909 (u). A detailed account of the observations and reductions follows in Sections 1 - 10. The discussion and comparison Of the results will be considered in Sections 1 1 - 20.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.
  • An Investigation of the Rotation Period of the Sun by Spectroscopic Methods

    Walter Sydney Adams, Jennie Belle Lasby

    Hardcover (Palala Press, Aug. 31, 2015)
    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.
  • An Investigation of the Rotation Period of the Sun by Spectroscopic Methods

    Walter S. Adams, Jennie B. Lasby

    Paperback (Leopold Classic Library, Sept. 4, 2017)
    About the Book A consumer guide is a book (or pamphlet) that advises consumers in relation to their purchases of goods and services.Also in this Book An encyclopedia (encyclopaedia) is a reference book that provides brief summaries of general knowledge or of a specialized field or discipline. Encyclopedias are comprised of topics that are generally arranged alphabetically but sometimes thematically. The entries are longer and more detailed than in most dictionaries. While encyclopedias have existed for 2,000 years, Chambers' Cyclopaedia (1728), the Encyclopédie of Denis Diderot and Jean le Rond d'Alembert (1751 onwards), and the Encyclopædia Britannica were the first to be presented in a form that we would recognize today.And in this Book Teaching methods comprise the principles and methods that are used by teachers to facilitate learning by students. Strategies are determined both by the subject matter to be taught and the characteristics of the student. While today’s schools encourage creativity, this was not always the case.About us Leopold Classic Library has the goal of making available to readers the classic books that have been out of print for decades. While these books may have occasional imperfections, we consider that only hand checking of every page ensures readable content without poor picture quality, blurred or missing text etc. That's why we: republish only hand checked books; that are high quality; enabling readers to see classic books in original formats; that are unlikely to have missing or blurred pages. You can search "Leopold Classic Library" in categories of your interest to find other books in our extensive collection. Happy reading!
  • An Investigation of the Rotation Period of the Sun by Spectroscopic Methods

    Walter Sydney Adams, Jennie Belle Lasby

    Paperback (Nabu Press, Feb. 28, 2010)
    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.
  • An Investigation of the Rotation Period of the Sun by Spectroscopic Methods

    Walter S. (Walter Sydney) Adams

    Paperback (HardPress Publishing, Jan. 10, 2012)
    Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.
  • An Investigation of the Rotation Period of the Sun by Spectroscopic Methods 1911

    Jennie Belle Lasby Walter Sydney Adams

    Hardcover (Facsimile Publisher, March 15, 2019)
    Lang: - English, Pages 157. Reprinted in 2019 with the help of original edition published long back [1911]. This book is Printed in black & white, Hardcover, sewing binding for longer life with Matt laminated multi-Colour Dust Cover, Printed on high quality Paper, re-sized as per Current standards, professionally processed without changing its contents. As these are old books, we processed each page manually and make them readable but in some cases some pages which are blur or missing or black spots. If it is multi volume set, then it is only single volume, if you wish to order a specific or all the volumes you may contact us. We expect that you will understand our compulsion in these books. We found this book important for the readers who want to know more about our old treasure so we brought it back to the shelves. (Any type of Customisation is possible with extra charges). Hope you will like it and give your comments and suggestions.
  • An investigation of the rotation period of the sun by spectroscopic methods

    Jennie Belle Adams, Walter S. (Walter Sydney), 1876-1956,Lasby

    Hardcover (Isha Books, March 15, 2013)
    Pages 143 It is the reproduction of the old book published long back(1911) We try our level best to give you perfect book but some time, due to old books some imperfections like missing or damaged Pages left in the book. These are due to the original artefact or left at the time of scanning. We found this book important for current readers who want to know about our old treasure so we brought them back to the shelves for you. We hope you will encourage us by accepting them in this reformed condition. We do not change the contents of the book just make it more readable by removing its yellow background. A coloured Dust cover with glossy Lamination is wrapped on the book. Print on Demand
  • An Investigation of the Rotation Period of the Sun by Spectroscopic Methods

    Jennie Belle Lasby, Walter S (Walter Sydney) 1876-1 Adams

    Hardcover (Wentworth Press, Aug. 29, 2016)
    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.
  • An Investigation of the Rotation Period of the Sun by Spectroscopic Methods

    Jennie Belle Lasby, Walter S (Walter Sydney) 1876-1 Adams

    Paperback (Wentworth Press, Aug. 29, 2016)
    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.
  • An Investigation Of The Rotation Period Of The Sun By Spectroscopic Methods

    Walter Sydney Adams, Jennie Belle Lasby

    Paperback (Kessinger Publishing, LLC, Sept. 10, 2010)
    This scarce antiquarian book is a facsimile reprint of the original. Due to its age, it may contain imperfections such as marks, notations, marginalia and flawed pages. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions that are true to the original work.
  • An investigation of the rotation period of the sun by spectroscopic methods

    Walter S. 1876-1956 Adams, Jennie Belle Lasby

    Paperback (Nabu Press, Aug. 20, 2010)
    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.
  • An investigation of the rotation period of the sun by spectroscopic methods

    Walter Sydney Adams, Jennie Belle Lasby

    Paperback (Nabu Press, Aug. 20, 2010)
    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.