Abstract
THE thermionic valve has come into almost universal use for radio-communication. This volume describes the development of this valve and gives many of its applications. The author has considerable practical experience of valves and has made a judicious selection from the leading papers and the more important patents on the subject. If he errs at all, it is in making the book too comprehensive and going too much into detail. A beginner reading this book almost wants some one to point out what to read and what to omit, at least, on a first reading. Very properly the author begins by describing the phenomena in terms of modern theory. But we are afraid that our imagination fails to grasp what is meant by saying that there are about 1022 free electrons in a cubic centimetre of cold metal. Current is taken as flowing from points of high negative potential to points of low negative potential. Modern theory certainly explains very satisfactorily the working of the three-electrode thermionic valve. We can recommend this book to serious students of the subject.
Thermionic Tubes in Radio Telegraphy and Telephony.
John
Scott-Taggart
By. Second edition. Pp. xxiv + 470. (London: The Wireless Press, Ltd.; New York: Wireless Press, Inc., 1924.) 15s.
Article PDF
Rights and permissions
About this article
Cite this article
[Book Reviews]. Nature 114, 413 (1924). https://doi.org/10.1038/114413b0
Issue Date:
DOI: https://doi.org/10.1038/114413b0