Chapter XVIII—AN EXPERIMENTAL WIRELESS TELEPHONE.
Chapter XIX—MISCELLANEOUS APPARATUS. Electrolysis of Water. Electro-Plating. Electricity from Heat. A Handy Light. An Experimental Arc Lamp. A Magnetic Diver. Magnetic Fish. A Magnetic Clown. An Electric Breeze. A Static Motor.
Price Postpaid, 30 cents per volume
All three volumes can be supplied bound together with handsome cloth cover for $1.25 postpaid.
Vacuum Tubes in Wireless Communication
By ELMER E. BUCHER
The only Text Book on the market devoted solely to the various applications of the Oscillation Valve.
An elementary text book for students, operators, experimenters and engineers. Naval wireless men find this book especially helpful. Tells in understandable language the fundamental operating principle of the vacuum tube. Shows over 100 different circuits for the practical use of the Vacuum Tube as a Detector, Radio or Audio Frequency Amplifier, Regenerative Receiver, Beat Receiver, and Generator of Radio Frequency Currents.
More than 100 diagrams reveal, step by step, in simple and direct form, the uses of the vacuum tube.