Wireless Transmission of Photographs Second Edition, Revised and Enlarged 1919

The work opens with a clear‑eyed look at the optimism surrounding the use of ether‑waves for more than simple telegraphy. It explains why sending photographs by radio could solve the painful bottlenecks of long‑distance land lines, especially over water, and hints at applications such as rapid news picture distribution and identification of criminals to ships at sea. While the technology is still in its experimental infancy, the author sketches the basic obstacles a pioneer would meet when trying to move a visual image through the air.

In the following chapters the reader is taken step by step through the electrical and optical principles needed for wireless imaging. New material added to this edition includes a description of the Nernst lamp, practical notes on photographic film, and a concise guide to lenses that most hobbyists find intimidating. Diagrams, circuit layouts and references to contemporary articles give experimenters enough detail to avoid costly dead‑ends and to focus their work on the most promising designs of the day.