Spark-gap transmitter - Wikipedia
Plug pulled on the world's last commercial electric telegraph system
NIAF on Twitter: "Day 3: Guglielmo Marconi (1874-1937) for #ItalianAmericanHeritageMonth -Known as the Father of Radio for his experiments with long distance wireless transmissions. Marconi shares the 1909 Nobel Prize in physics
This Month in Physics History
Invention of radio - Wikipedia
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Wireless telegraphy - Wikipedia
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A late 19th Century photograph of Guglielmo Marconi (1874-1937) an inventor and electrical engineer, known for his pioneering work on long-distance radio transmission,development of Marconi's law, and a radio telegraph system. He
Morse Code | Invention, History, & Systems | Britannica
Wireless telegraph transmitter hi-res stock photography and images - Alamy
Untitled Document
The Foundations of Radio, Telegraph, Morse Code
Wireless telegraphy - Wikipedia
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Invention of radio - Wikipedia
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Wireless telegraphy - Wikipedia
