The development of telephone

Alexander Graham BellAlexander Graham Bell

The development of telephone

Since Alexander Graham Bell invented the telephone in 1876, it has become a cornerstone of modern life by offering nearly instant connections around the world. The first two-way voice conversation was transmitted across the Atlantic Ocean in 1926, and commercial telephone service (using radio) began between New York and London in 1927.

Transoceanic phone service was eventually handled by submarine cables in 1956 and since 1962 communications satellites. Today's chemical engineers have brought us from copper wire to fiber optics, from switchboards to satellites, and from party lines to the Internet.

Did you know?

The first cable-line telephone connection between the United States and Europe was established on 24 September 1956. Named TAT-1, the cable network spanned a distance of 2,250 miles between the coasts of Newfoundland and Scotland. Initially, the system was only able to serve 36 simultaneous conversations.
The first underwater telephone cable of the Western UnionThe first underwater telephone cable of the Western Union