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how did alexander graham bell invent the telephone


2023-09-25


His main interest remained in the sciences, especially biology, while he treated other school subjects with indifference, to the dismay of his father. The Invention and Evolution of the Telephone - ThoughtCo [144] Returning in 1886, Bell started building an estate on a point across from Baddeck, overlooking Bras d'Or Lake. In 1880 he began research on using light as a means to transmit sound. The transmitter comprised three partsa drumlike device (a cylinder with a covered end), a needle, and a battery. Who invented the telephone? | Live Science [102], Bell began a series of public demonstrations and lectures to introduce the new invention to the scientific community as well as the general public. In August of that year, he was on the receiving end of the first one-way long-distance call, transmitted from Brantford to nearby Paris, Ontario, over a telegraph wire. Although Edison had invented the phonograph in 1877, he soon turned his attention to other technologies, especially electric power and lighting, and his machine, which recorded and reproduced sound on a rotating cylinder wrapped in tinfoil, remained an unreliable and cumbersome device. From his laboratory in Boston, Bell applied his knowledge of phonetics to create a harmonic telegraph. He wanted to make a telegraph that could send several different notes simultaneously on the same wire. [44], In 1870, 23-year-old Bell travelled with his parents and his brother's widow, Caroline Margaret Ottaway,[45] to Paris, Ontario,[46] to stay with Thomas Henderson, a Baptist minister and family friend. When he and his wife moved to the United States, he was on the Staten Island ferry explosion and received bad burns. The property consisted of an orchard, large farmhouse, stable, pigsty, hen-house, and a carriage house, which bordered the Grand River. "[177], A review of Bell's "Memoir upon the Formation of a Deaf Variety of the Human Race" appearing in an 1885 issue of the "American Annals of the Deaf and Dumb" states that "Dr. Bell does not advocate legislative interference with the marriages of the deaf for several reasons one of which is that the results of such marriages have not yet been sufficiently investigated." In January 1915, Bell made the first ceremonial transcontinental telephone call. The third test on August 10, 1876, was made via the telegraph line between Brantford and Paris, Ontario, eight miles (thirteen kilometres) distant. The word "hello," it appears, came straight from the fertile brain of the wizard of Menlo Park, N.J., who . [8] His research on hearing and speech further led him to experiment with hearing devices which eventually culminated in Bell being awarded the first U.S. patent for the telephone, on March 7, 1876. The pair demonstrated the probe in the autumn of 1881. The Story Behind the Telephone | The Franklin Institute Returning home to Brantford after six months abroad, Bell continued his experiments with his "harmonic telegraph". [172], Bell, along with many members of the scientific community at the time, took an interest in the popular science of heredity which grew out of the publication of Charles Darwin's book On the Origin of Species in 1859. Perplexed by the peculiar results he had obtained during an examination of Garfield, Bell "proceeded to the Executive Mansion the next morning to ascertain from the surgeons whether they were perfectly sure that all metal had been removed from the neighborhood of the bed.

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