Watch the movie and read the article. Take notes and come prepared to discuss tomorrow!
4-08-16
Early
Life
When he was only eleven years old, he invented a machine that could
clean wheat.
Graham studied anatomy and physiology at the University of London, but
moved with his family to Quebec,Canada in
1870.
Working
with the Deaf
In 1871, he began working with deaf people and
published the system of Visible Hearing that was developed by his father.
Visible Hearing illustrated how the tongue, lips, and throat are used to
produce vocal sounds. In 1872, Bell founded a school for the deaf which soon
became part of Boston University.
Telephone
Alexander Graham Bell is best known for his
invention of the telephone. While trying to discover the secret to transmitting
multiple messages on a single wire, Bell heard the sound of a plucked string
along some of the electrical wire. One of Bell’s assistants, Thomas A. Watson
was trying to reactivate a telephone transmitter. After hearing the sound, Bell
believed he could send the sound of a human voice over the wire. After
receiving a patent on March 7, 1876, for transmitting sound along a single
wire, he successfully transmitted human speech on March 10th. Bell’s telephone
patent was one of the most valuable patents ever issued.
National Geographic
Bell went on to invent a precursor to the modern
day air conditioner, and a device called a “photophone” that enabled sound to
be transmitted on a beam of light and on which today’s fiber optic and laser
communication systems are based. In 1898, Alexander Graham Bell and his son-in
law took over the National Geographic Society and built into one of the most
recognized magazines in the world. Bell also helped found Science Magazine, one
of the most respected research journals in the world.
Death
Alexander Graham Bell died August 2, 1922. On the
day of his burial, in honor of Bell, all telephone service in the U.S. was
stopped for one minute.
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