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The Astrophysical Journal, Vol. 40: An International Review of Spectroscopy and Astronomical Physics; July-December, 1914 (Classic Reprint) - Softcover
Excerpt from The Astrophysical Journal, Vol. 40: An International Review of Spectroscopy and Astronomical Physics; July-December, 1914
If this interpretation of the displacements were free from serious difficulties it would be unnecessary to propose other Views of the subject. It is a fact, however, that there are great difficulties; hence the pro and con Of rival theories may well be submitted to the consideration of astrophysicists.
The displacements on which St. John's conclusions depend are of the order of magnitude A, only very few exceeding A. It certainly testifies to that author's experimental proficiency as well as to the power of the Mount Wilson apparatus that on such minute quantities a regular investigation can be based; but at the same time the conditions of the research warn us against putting too much confidence in the individual observations. On p. 4 of Contribution N o. 69, St. John explains why the mean deviations (given in the sixth column of his Table I) from the mean displace ments calculated for every line are SO considerable. Trustworthy results can therefore be expected only from those considerations in which the statistical treatment includes a sufficiently great number of Observed displacements, whereas the reliability of apparent relations rapidly decreases with the number of measure ments from which they are deduced.
A survey of the whole series of measurements led St. John to the discovery of two very important and striking laws (1) the displacements increase with increasing wave - length; (2) the dis placements progressively decrease with the increase of line intensity.
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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.
If this interpretation of the displacements were free from serious difficulties it would be unnecessary to propose other Views of the subject. It is a fact, however, that there are great difficulties; hence the pro and con Of rival theories may well be submitted to the consideration of astrophysicists.
The displacements on which St. John's conclusions depend are of the order of magnitude A, only very few exceeding A. It certainly testifies to that author's experimental proficiency as well as to the power of the Mount Wilson apparatus that on such minute quantities a regular investigation can be based; but at the same time the conditions of the research warn us against putting too much confidence in the individual observations. On p. 4 of Contribution N o. 69, St. John explains why the mean deviations (given in the sixth column of his Table I) from the mean displace ments calculated for every line are SO considerable. Trustworthy results can therefore be expected only from those considerations in which the statistical treatment includes a sufficiently great number of Observed displacements, whereas the reliability of apparent relations rapidly decreases with the number of measure ments from which they are deduced.
A survey of the whole series of measurements led St. John to the discovery of two very important and striking laws (1) the displacements increase with increasing wave - length; (2) the dis placements progressively decrease with the increase of line intensity.
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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- PublisherForgotten Books
- Publication date2024
- ISBN 10 1334033196
- ISBN 13 9781334033193
- BindingPaperback
- Number of pages544
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The Astrophysical Journal, Vol. 40 (Classic Reprint)
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Book Description Paperback. Condition: New. Print on Demand. Excerpt from The Astrophysical Journal. About the Publisher, Forgotten Books publishes hundreds of thousands of rare and classic books. 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. This text has been digitally restored from a historical edition. Some errors may persist, however we consider it worth publishing due to the work's historical value. The digital edition of all books may be viewed on our website before purchase. print-on-demand item. Seller Inventory # 9781334033193_0
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