-
Michael Faraday
proved that vibrations of metal could be converted to electrical impulses -
Period: to
History of the Telphone
This will be only some of the history prior to Alexander Grahm Bell. troughout his life and will end with his death. I could go on and on but it would take me forever. -
Birth of Alexander grahm bell
was born in Scottland, UK. He was an eminent scientist, inventor, engineer and innovator who is credited with inventing the first practical telephone. -
Alexander Grahm Bell
Both his mother and father were deaf which highly influenced his work. He was a professor of the deaf at Boston University. -
Inventor at an early age 12
Bell built a homemade device that combined rotating paddles with sets of nail brushes, creating a simple dehusking machine that was put into operation and used steadily for a number of years -
Johann Philip Reis
built a apparatus that changed sound to electricity and back again to sound -
Antonio Meucci
filed his patent caveat (notice of intention to take out a patent) -
First Patent filed
Bell files first patent for improved telegraphy -
Telephone inventions begin
Bell while working on a multiple telegraph, developed the basic ideas for the telephone -
Telephone
Def- An instrument which converts sound, specifically the human voice, to electrical impulses of various frequencies and then back to a tone that sounds like the original voice. -
invention of the telephone
Alexander Graham Bell invented the telephone. Bell's experiments with his assistant Thomas Watson finally proved successful.
-He was awarded the first US Patent for the telephone in 1876
-Bell and Watson transmit the first complete sentence -
Help with the telephone invention
Antonio Meucci, Philip Reis, Elisha Gray and Alexander Graham Bell were only some of the people credited for the invention of the telephone.
--Bell files patent application on February 14,. patent issues March 7 -
Elisha Gray
filed his patent caveat (notice of intention to take out a patent) on February 14, -
Bell telephone company
formed Bell Telephone Company to operate local telephone exchange operation. -first city exchange installed in Hartford, Connecticut -
Outside US exchanges
First exchange outside the United States was built in London, England -
The creation of the photophone
Grahmn created the first photophone which allowed transmission of sound on a beam of light. -
Creation of the wireless telephone
Bell conducted the world's first wireless telephone transmission between two buildings, some 213 meters apart.Its first practical use came in military communication systems many decades later. -
A. Bell Grahmn
acquired a controlling interest in the Western Electric Company, Elisha Gray's company -
2 cities
First exchange linking two major cities was established between New York and Boston -
Long Distance
formed American Telephone and Telegraph Company to operate the long distance network. -
The pay phone
coin operated pay telephone was patented by William Gray of Hartford, Connecticut -
Automatic telephone exchange
first automatic telephone exchange was patented by Almon Strowger of Kansas City -
Expanding out
The Detroit Police Department, began experimentation with one-way vehicular mobile service. -
Death of Alexander Grahm Bell
Age 75 died form complications with diabeties in
Beinn Bhreagh, Nova Scotia, Canada
