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CAN YOU HEAR ME NOW? “If I could make a current of electricity vary in intensity precisely as the air varies in density during the production of sound,

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Presentation on theme: "CAN YOU HEAR ME NOW? “If I could make a current of electricity vary in intensity precisely as the air varies in density during the production of sound,"— Presentation transcript:

1 CAN YOU HEAR ME NOW? “If I could make a current of electricity vary in intensity precisely as the air varies in density during the production of sound, I should be able to transmit speech telegraphically.”

2 Alexander Gram Bell Alexander Graham Bell is a Scottish-born American scientist, inventor, engineer and innovator. He was born in March 1847 and died in August Bell is credited with patenting the first telephone!

3 Bell’s Early Life Bell was born in Scotland in March He grew up in Edinburgh, Scotland, the “Athens of the North,” for its rich culture of arts and science. Bell’s mother, nearly deaf, was an accomplished pianist and inspired him to undertake tough challenges. His grandfather and father were expert mechanics of voice and elocution. Homeschooled, his mother instilled endless curiosity and wonder in him. He was a mediocre student but could solve problems. For example, as a boy, he noticed the slow process of husking the wheat grain. He went home and built a contraption with rotating paddles and nail brushes to easily remove the husks from grain.

4 Innovative Inventions and More
“Mr. Watson, come here; I want you,” was the first coherent complete sentence transmitted in Bell’s laboratory. In 1874, Bell designed the telephone. Two years later, he applied for a patent. In later years, Bell helped develop the iron lung. He assisted Thomas A. Edison’s phonograph to commercial practicality and experimented with hydrofoil boats and with airplanes as early as the 1890s. With his wealth derived from the telephone and his passion for science, he helped assist the careers of other scientists. He also founded and financed the journal Science, today the premier American scientific journal, and the National Geographic Society.

5 Bell’s Innovative (Global) Impact
Globally, over 4.7 billion people stay connected using mobile phones. Bell’s contribution to and invention of telecommunications has become vital as we become a global community. He set the foundation for the “coffin” units of the 1800s; that led to the rotary phone- a design that lasted decades; that became the touchtone phones introduced in the 1960s; that evolved into the archaic car phone and cordless phone varieties of the 1990s; which has further branched off into multiple technologies such as beepers, iPads, palm planners, cell phones and, of course, the vast array of smart phones of today!

6 “Can you hear me now? Good!”
Four Fun Facts Did you know? Bell considered his most famous invention an intrusion on his real work as a scientist and refused to have a telephone in his study. Bell’s mother and wife were deaf, which profoundly influenced his life's work. When Bell died in 1922, people throughout North America were urged to refrain from making phone calls during his burial so that telephones would remain silent as a tribute. By 2019, the number of mobile phone users in the world is expected to pass the five billion mark! “Can you hear me now? Good!”

7 References Alexander Graham Bell - Inventions - HISTORY. com. (n. d. )
References Alexander Graham Bell - Inventions - HISTORY.com. (n.d.). Retrieved from Alexander Graham Bell - Wikipedia. (n.d.). Retrieved April 18, 2017, from Alexander Graham Bell. (n.d.). Retrieved from bell Iron lung - Wikipedia. (n.d.). Retrieved April 19, 2017, from Phonograph - Wikipedia. (n.d.). Retrieved April 19, 2017, from Telephone design: A brief history. [PHOTOS]. (n.d.). Retrieved from hotos_.html Number of mobile phone users worldwide | Statista. (n.d.). Retrieved from


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