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History of the Telephone

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History of the Telephone

- The earliest telephones were basically pipes that transmitted sound. This idea originated from China. (4)
- Next were the two diaphragms with a string or wire connected them in the middle. (4)
- In 1809 Samuel Thomas von Soemmering constructed his electrochemical telegraph. (4)
- Baron Schilling created an electromagnetic telegraph in 1832.4
- Then in 1837, the electrical telegraph was invented by Samuel Morse. (4)
- French inventor Charles Bourseul proposed a technique for transmitting sound waves into electrical signals. (1)
- Italian American inventor Antonio Meucci in 1857 invented an acoustic communication device that could transmit speech, but not very clearly. (2)
- In 1860 Johann Philip Reis invented an instrument that could transmit musical tones, but not speech. (1)
- Then in 1875 Alexander Graham Bell invented the telephone. (4)
- Bell transmitted speech to Mr. Watson for the very first time in 1871 using liquid transmitters and electromagnetic receivers. (4)
- In 1877 Bell got his patent for the electromagnetic telephone using permanent magnets, iron diaphragms, and a call bell. (4)
- Thomas Edison then improved the telephone by using carbon granules transmitters and the in 1892 he made them into carbon graphite transmitters. (4)
- 1878 the switchboards were created and there were no more direct lines. (5)
- 1879 people were designated by numbers and not their names. (5)
- 1880s long-distance calling (5)
- 1891 first automating dialing system developed by an undertaker in Kansas City. (5)
- 1927 first transatlantic service became operational using radio waves. (5)
- 1946 world’s first mobile phone service, again using radio waves (5)
- 1947 microwave radio technology used for the first time in long distance calls (5)
- 1955 beginning of the laying of the transatlantic telephone cables (5)
- 1962 first international communication satellite was launched (5)
- 1973 first cellular phone by Motorola (5)
- 1980s the development of fiber optics came along (5)
- 1990s-2000s digital telephone, instead of traveling over copper wires the signal travels on high-speed internet lines. (5)

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