9 public-domain matches
Vacuum Tubes
On the Appearance of Helium and Neon in Vacuum Tubes
The A B C of vacuum tubes in radio reception; an elementary and practical book on the theory and operation of vacuum tubes as detectors and amplifiers. Explains non-mathematically the fundamental principles upon which all vacuum tube circuits are based. Includes practical circuits and practical questions and answers. It is written especially for the beginner. All electrical and radio terms are fully explained
An Extension of the Balmer Series of Hydrogen and Spectroscopic Phenomena of Very Long Vacuum Tubes
Experiments on the Dark Space in Vacuum Tubes
The Occlusion of the Residual Gas by the Glass Walls of Vacuum Tubes
Vacuum tubes in wireless communication
Electric screening in vacuum tubes
Electric Discharge in Vacuum Tubes