Alexander Graham Bell – Wikipedie

Alexander Graham Bell (3. března 1847 Edinburgh, Skotsko – 2. srpna 1922 Baddeck, Kanada) byl skotsko-americký vědec a vynálezce, který se zabýval tvorbou lidské řeči, výchovou hluchoněmých a elektromagnetickým přenosem řeči.
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BBC - History - Alexander Graham Bell

Explore a biography of Alexander Graham Bell the inventor of the telephone. Discover facts about his early life through to his later inventions.
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Alexander Graham Bell | Biography, Education, Family, Telephone…

Alexander Graham Bell (1847–1922) was a British-American inventor, scientist, and teacher of the deaf whose foremost accomplishments were the invention of the telephone (1876) and refinement of the phonograph (1886).
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Who was Alexander Graham Bell?Alexander Graham Bell was an inventor, scientist, and teacher who is best remembered for inventing the telephone. He was born on March 3, 1847, in Scotland, and he and his family moved to England in 1865 and Canada in 1870. A year later Bell moved to the United States, where he taught speech to deaf students and where he also invented and improved a number of electrical technologies. He became a U.S. citizen in 1882 while remaining a British subject; he later moved to Canada and lived there until his death on August 2, 1922.
What did Alexander Graham Bell invent?Although Alexander Graham Bell is best remembered as the inventor of the telephone, he invented other devices too. Bell developed several sonic technologies, including the photophone (1880) and the Graphophone (1886). He also developed medical technology. After the shooting of U.S. Pres. James A. Garfield in July 1881, Bell teamed up with professor Simon Newcomb of the U.S. Nautical Almanac Office to develop an electrical bullet probe. The pair demonstrated the probe in the autumn of 1881. Bell later shifted his attention to aerial technology. He founded the Aerial Experiment Association in 1907.
How did Alexander Graham Bell’s telephone work?The first telephone had two parts: a transmitter and a receiver. The transmitter comprised three parts—a drumlike device (a cylinder with a covered end), a needle, and a battery. The covered end of the drumlike device was attached to the needle. The needle was connected by wire to the battery, and the battery was connected by wire to a receiver. When Bell spoke into the open end of the drumlike device, his voice made the paper and needle vibrate. The vibrations were then converted into an electric current which traveled along the wire to the receiver.

Alexander Graham Bell - Wikipedia

Alexander Graham Bell (/ ˈ ɡ r eɪ . ə m/ ; born Alexander Bell; March 3, 1847 – August 2, 1922) [4 ] was a Scottish-born [N 1 ] Canadian-American inventor, scientist, and engineer who is credited with patenting the first practical telephone…
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Alexander Graham Bell - Linda Hall Library

Alexander Graham Bell, a Scottish/American/Canadian inventor, was born Mar. 3, 1847, in Edinburgh. Bell's father and grandfather were elocutionists and phoneticians, with interests.
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Alexander Graham Bell - Engineering and Technology History Wiki

“Mr. Bell, are you going to the Centennial?” might have been the words history remembered as the first spoken over Bell’s magneto telephone that would become commercialized in less than a year.
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Biography of Alexander Graham Bell, Inventor

Alexander Graham Bell was the Scottish-born American inventor of the telephone. Learn more about his work with the deaf, other inventions, and life.
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The Story of Alexander Graham Bell (1939) - IMDb

The Story of Alexander Graham Bell: Directed by Irving Cummings. With Don Ameche, Loretta Young, Henry Fonda, Charles Coburn. The story of how Alexander Graham Bell invented the telephone.
70% Hodnocení: 70%1 242 lidí hodnotilo
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About this Collection | Alexander Graham Bell Family Papers at…

The collection contains over 145,000 items. The online version contains 4,695 items (equaling about 51,500 images), consists of correspondence, scientific notebooks, journals, blueprints, articles, and photographs documenting Bell's…
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The Life of Alexander Graham Bell | The Royal Canadian Mint…

Dive into the story of one of the world's greatest inventors, Alexander Graham Bell. Find out how the Royal Canadian Mint is honouring the 175th anniversary of his birth
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