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The Bell System Technical Journal, 1936, Vol. 15: A Journal Devoted to the Scientific and Engineering Aspects of Electrical Communication; Table of Contents and Index (Classic Reprint) - Softcover
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Excerpt from The Bell System Technical Journal, 1936, Vol. 15: A Journal Devoted to the Scientific and Engineering Aspects of Electrical Communication; Table of Contents and Index
Observations of field variations were made on radio signals at a number of different frequencies and over several paths. It was concluded that a characteristic sunset cycle of field variations is present on frequencies between 18 kc. And 68 kc. For transmission paths longer than 700 km. For paths less than 200 km. Long, such variations are negligible. There is some evidence that the amplitude of these field variations is smaller at lower frequencies.
Analysis of the data presented indicates that long waves over long paths are transmitted predominately by sky waves. From the data it was not possible to establish any satisfactory picture of the path followed. It was established, however, that empirical methods based on observations over a particular transmission path may be employed to forecast the approximate time of occurrence of field variations.
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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.
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- PublisherForgotten Books
- Publication date2020
- ISBN 10 0282943617
- ISBN 13 9780282943615
- BindingPaperback
- LanguageEnglish
- Number of pages778
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The Bell System Technical Journal, 1936, Vol. 15 (Classic Reprint)
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Paperback. Condition: New. Print on Demand. An array of phenomena surrounding the corrosion of metals is presented in this book, with the mechanisms of associated processes given thoughtful consideration. The expert author presents electrochemical tools and their utility in corrosion investigations. The stability of films is a pivotal concern, with the establishment of parameters and concepts enabling understanding of corrosion behavior. This knowledge, in concert with the composition and structure of the metals themselves, give rise to predictive capabilities and an enhanced comprehension of corrosion problems typically beyond the reach of conventional testing methods. 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. Seller Inventory # 9780282943615_0
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The Bell System Technical Journal, 1936, Vol. 15: A Journal Devoted to the Scientific and Engineering Aspects of Electrical Communication; Table of Contents and Index (Classic Reprint)
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The Bell System Technical Journal, 1936, Vol. 15: A Journal Devoted to the Scientific and Engineering Aspects of Electrical Communication; Table of Contents and Index (Classic Reprint)
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The Bell System Technical Journal, 1936, Vol. 15 : A Journal Devoted to the Scientific and Engineering Aspects of Electrical Communication; Table of Contents and Index (Classic Reprint)
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Condition: Sehr gut. Zustand: Sehr gut - Gepflegter, sauberer Zustand. | Seiten: 780 | Sprache: Englisch | Produktart: Bücher. Seller Inventory # 30165142/2
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