Signalling across space without wires
being a description of the work of Hertz & his successors
en
~4 hours (250K characters)
Project Gutenberg
United Kingdom: "The Electrician" printing and publishing company, 1900.
deaurider and the Online Distributed Proofreading Team at https://www.pgdp.net (This file was produced from images generously made available by The Internet Archive)