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Report of the Chief Astronomer, 1909, Appendix No. 2: Astrophysical Work (Classic Reprint) - Softcover
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Excerpt from Report of the Chief Astronomer, 1909, Appendix No. 2: Astrophysical Work
Both forms of instrument are frequently required on the same night, for stars of varying brightness and type. The time lost in making the change from single to three prism or vice versa, and the uncertainty in the temperature conditions prevailing after the change, close temperature regulation being equally as important, perhaps more important than avoidance of moderate flexure, were considerations leading to the decision, which had the approval of Dr. King, to design and construct a separate single prism spectrograph, with separate temperature control and attaching stand, so that the change could be made in a minute or two, and without disturbance of tempera ture.
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Report of the Chief Astronomer, 1909, Appendix No. 2: Astrophysical Work
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Paperback. Zustand: New. Print on Demand. This book presents the latest research in radial velocity determinations and other related investigations on some stars with early type spectra. Some stars were found to be variable in velocity. The author, an astronomer and physicist, discusses the elements of the orbits of five spectroscopic binaries and explains how radial velocity curves due to simple elliptic orbits present a secondary disturbance, suggesting a possible third body in two of the orbits investigated. The author has also written a detailed report of an investigation on the effect of increasing the slit-width on errors of measurement in radial velocity work. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Bestandsnummer des Verkäufers 9781334087486_0
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Report of the Chief Astronomer, 1909, Appendix No 2 Astrophysical Work Classic Reprint
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PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000. Bestandsnummer des Verkäufers LW-9781334087486
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Report of the Chief Astronomer, 1909, Appendix No 2 Astrophysical Work Classic Reprint
Anbieter: PBShop.store UK, Fairford, GLOS, Vereinigtes Königreich
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PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000. Bestandsnummer des Verkäufers LW-9781334087486
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