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Many early telegraph cables were made of iron wire, but all modern ones are copper.
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What has the author Louis Casper written?
Louis Casper has written: 'Telephone and telegraph cables' -- subject(s): Telegraph cables, Telephone cables
When were the first telegraph cables invented?
They were invented in 1944.
What has the author Charles Bright written?
Charles Bright has written: 'The story of the Atlantic cable' -- subject(s): Transatlantic cables 'Imperial telegraphic communication and the \\' -- subject(s): Submarine Cables, Telegraph 'Submarine telegraphs' -- subject(s): Accessible book, Submarine Cables, Telegraph 'Submarine telegraphs; their history, construction, and working' -- subject(s): Submarine Cables '\\' -- subject(s): Submarine Cables, Telegraph
What was the name of an intercepted telegraph that led to increasing American sentiment to join the war on the allied side?
zimmerman telegraph cables
What has the author Henry Martyn Field written?
Henry Martyn Field has written: 'The Irish confederates, and the Rebellion of 1798' -- subject(s): History 'The story of the Atlantic telegraph' -- subject(s): Cables, Submarine, Submarine Cables, Transatlantic cables 'History of the Atlantic Telegraph' -- subject(s): Cables, Submarine, Submarine Cables, Transatlantic cables 'The Barbary coast' -- subject(s): Description and travel
What is an example of a sentence using the word telecommunication?
Telecommunication is communication over a distance by cable, telegraph, telephone, or broadcasting. Cables are used for telecommunication. Telegraph is one form of telecommunication.
What reason was the telephone invented?
The telephone was invented as an evolutionary setup from the telegraph, naturally Alexander Graham Bell wondered if there was a way to transfer his voice through interconnecting cables like the telegraph.
Where was the telegraph made?
china
What year was the telegraph made?
1837
What has the telephone made obsolete?
telegraph
How did America become aware of the Zimmerman Telegraph?
The Germans sent the telegraph in secret code using telegraph cables borrowed from the US- when the war started, Britain destroyed Germany's cables, so the US allowed Germany to borrow the American cables. Because these American cables were near Britain, the British were able to tap into them and read the German (and American) messages being sent. The British had broken the German codes, and were secretly reading everything Germany was sending. So when the Zimmerman telegraph was sent, the British also got it. However, if the British publicized the message, then Germany would know that Britain had broken the codes. So the British had to set up an elaborate plan to make it look like they actually stole the secret message from the German embassy in Mexico. Once that was successful, the British gave the message to the United States, and the United States was able to use their own telegraph records (since, as earlier said, the Germans were using the American cables) to verify that the message was real.
What are transmission cables made of?
Transmission cables are made of conductors and insulating material covering that conductor.
