2007-08-22 16:19:24 · 5 answers · asked by Anonymous in Arts & Humanities ➔ History
This is from memory, so may not be completely accurate: Bascially a telegraph was an electrical wire running between two points. A current was run through this line, but was interuppted by a switch. As the telegraph operater clicked the switch in code, the pattern of the strikes would be repeated at the other end by a device that struck in time with the operator's movements miles away. Initially, this was simply by the sound of a hammer striking. Later they added a paper reel and imprinted dots on it to record the message.
2007-08-22 17:34:01 · answer #1 · answered by rohak1212 7 · 0⤊ 0⤋
The History of the Telegraph and Telegraphy.
The Beginning of Electronic Communications
In 1825, British inventor William Sturgeon (1783-1850) exhibited a device that laid the foundations for large-scale electronic communications: the electromagnet.
For more see:
http://inventors.about.com/library/inventors/bltelegraph.htm
2007-08-22 23:29:45 · answer #2 · answered by Anonymous · 0⤊ 0⤋
It worked on a system of key closures and solinoids. Voltage was put on the line with the key closure and that voltage would enter into a coil in the solinoid to become magnetic and pull down an iron bar that made the clicks. It did not take much voltage, just about 3 - 6. The voltage source had to be DC.
2007-08-23 08:14:20 · answer #3 · answered by Polyhistor 7 · 0⤊ 0⤋
~Not all that well, but it beat the heck out of the pony express and the US mail.
2007-08-23 01:08:19 · answer #4 · answered by Oscar Himpflewitz 7 · 3⤊ 0⤋
This sounds like homework, can't you just google the question and find it for yourself?
2007-08-22 23:26:45 · answer #5 · answered by crim 3 · 0⤊ 3⤋