wireless telegraphy

communications

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July 16, 2026

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Wireless telegraphy is a method of communication that transmits signals using radio waves without the need for connecting wires. This technology was significantly advanced by Guglielmo Marconi, who built upon earlier experiments. Marconi successfully transmitted the letter "s" across the Atlantic Ocean in 1901, a distance of nearly 2,000 miles, using a device called a coherer to detect the signals. This breakthrough in wireless communication, along with the earlier electric telegraph invented by Samuel F.B. Morse and the telephone by Alexander Graham Bell, dramatically reduced the time it took to send messages over long distances, effectively drawing the world closer together.1234

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George Francis FitzGerald
…to lay the basis of wireless telegraphy. He also developed a theory, now known as the Lorentz–-FitzGerald contraction, which Einstein used in his own special theory of relativity.
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…to lay the basis of wireless telegraphy. He also developed a theory, now known as the Lorentz–-FitzGerald contraction, which Einstein used in his own special theory of relativity.
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Titanic
Sinking
…much of the voyage, the wireless radio operators on the Titanic, Jack Phillips and Harold Bride, had been receiving iceberg warnings, most of which were passed along to the bridge. The two men worked for the Marconi Company, and much of their job was relaying passengers’ messages. On the evening…
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…much of the voyage, the wireless radio operators on the Titanic, Jack Phillips and Harold Bride, had been receiving iceberg warnings, most of which were passed along to the bridge. The two men worked for the Marconi Company, and much of their job was relaying passengers’ messages. On the evening…
Read More