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In describing the Euphonia, the 19th century American scientist Joseph Henry explained "that sixteen levers or keys 'like those of a piano' projected sixteen elementary sounds by which 'every word in all European languages can be distinctly produced.' A seventeenth key opened and closed the equivalent of the glottis, an aperture between the ...
Joseph Henry (December 17, 1797 [1] [2] – May 13, 1878) was an American physicist and inventor who served as the first secretary of the Smithsonian Institution.He was the secretary for the National Institute for the Promotion of Science, a precursor of the Smithsonian Institution. [3]
Joseph Henry 'Joe' Condon (born February 15, 1935 – January 2, 2012) was an American computer scientist, engineer and physicist, who spent most of his career at Bell Labs. [1]
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.
Cooke and Wheatstone's five-needle telegraph from 1837 Morse telegraph Hughes telegraph, an early (1855) teleprinter built by Siemens and Halske. Electrical telegraphy is a point-to-point text messaging system, primarily used from the 1840s until the late 20th century.
Joseph Henry, 33, looks at the trophy he received Friday, March 1, 2024, during the first graduation ceremony of Franklin County Common Pleas Court's mental health docket, called RISE Court.
The master telephone patent granted to Bell, 174465, March 7, 1876. The modern telephone is the result of the work of many people. [10] Alexander Graham Bell was, however, the first to patent the telephone, as an "apparatus for transmitting vocal or other sounds telegraphically".
Joseph John O'Connell (1861 – 1959), 1st, was an electrical engineer and inventor. He worked for the Chicago Telephone Company (which began as the Chicago Bell Telephone, Co. in 1878 [ 1 ] ) in the late 19th and early 20th centuries.