Excerpt from The Principles Underlying Radio Communication
Prepared by the Bureau of Standards under the direction of the Training Section of the Office of the Chief Signal Officer of the Army.
Acknowledgment is made of the valuable service rendered the Signal Corps by the Bureau of Standards through the work of Dr. J. H. Dellinger, physicist, Bureau of Standards, and the following men engaged with him in the writing of this book:
F. W. Grover,
Consulting Physicist, Bureau of Standards; Assistant Professor of Electrical Engineering, Union University.
C. M. Smith,
Associate Professor of Physics, Purdue University.
G. F. Wittig,
Assistant Professor of Electrical Engineering, Yale University.
A. D. Cole,
Professor of Physics, Ohio State University.
L. P. Wheeler,
Assistant Professor of Physics, Yale University.
H. M. Royal,
Professor of Mathematics, Clarkson College of Technology.
In this book are presented briefly the basic facts and principles of electromagnetism and their application to radio communication. In the effort to present these topics in a simple manner for students with very little mathematical preparation, it has been necessary at times to use definitions, illustrations, and analogies which would not be used in a work prepared for more advanced students. Frequent references to standard books are given for further study, and students should be encouraged, as far as possible, to consult them.
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