The Thermionic Vacuum Tube and Its Applications #230100

I have tried to make the treatment sufficiently elementary to meet the demands that will necessarily be made on a book Of this kind. This is especially the case with the first few chapters, which must be regarded as very elementary and are mainly intended for those who are interested in the applications of thermionic tubes but are not sufficiently acquainted with the properties and behavior of electrons to understand the Operation of these tubes. I wish to express my indebtedness to several of my colleagues who have read parts or all of the manuscript. In this connection I wish to mention especially Mr. C. A. Richmond and Dr. P. I.