The induction balance electric probe located metal in the body. Alexander Graham Bell (Edimburgo, Escocia, Reino Unido, 3 de marzo de Beinn Bhreagh, Canadá, 2 de agosto de ) fue un científico, inventor y logopeda británico. In , Bell makes a first prototype of the vibraphone. The apparatus is actuated using mobile a metal strip, similar to those of the clarinets. In he became a member of a governing board of the Smithsonian Institution. Algunas de las cometas de Bell se exhiben actualmente en el Alexander Graham Bell National Historic Site.
Baddeck, Nova Scotia, Canada Scottish-born American inventor Alexander Graham Bell, Scottish-born American inventor and teacher of margalo gillmore biography deaf, is best known for perfecting the telephone to transmit, or send, vocal messages using electricity.
The telephone began a new age in communications technology. The young man Alexander Graham Bell was born on March 3,in Edinburgh, Scotland. His father, Alexander Melville Bell, was an expert on the mechanics of the voice and on elocution the art of public speaking.
His grandfather, Alexander Bell, was an elocution professor.
Bell's mother, Eliza, was hard of hearing but became an accomplished pianist as well as a painterand Bell took an interest in music. Eliza taught Alexander, who was the alexander graham bell mini biography of three brothers, until he was ten years old. When he was a youth he took a challenge from a mill operator and created a machine that removed the husks from grain.
He would later call it his first invention. After studying at the University of Edinburgh and University College, London, England, Bell became his father's assistant. He taught the deaf to talk by adopting his father's system of visible speech illustrations of speaking positions of the lips and tongue.
In London he studied Hermann Ludwig von Helmholtz's — experiments with tuning forks and magnets to produce complex sounds. In Bell alexandder scientific studies of the resonance vibration of the mouth while speaking.
Both of Bell's brothers had died of tuberculosis a fatal disease that attacks the lungs. In his parents, in search of a healthier climate, convinced him to move with them to Brantford, Ontario, Canada.
In he went to Boston, Massachusetts, to teach at Sarah Fuller's School for the Deaf, the first such alexander graham bell mini biography in the world. He also tutored private students, including Helen Keller — As professor of voice and speech at Boston University inhe initiated conventions for teachers of the deaf. Throughout his life he continued alecander educate the deaf, and he founded the American Association to Promote the Teaching of Speech to the Deaf.
Biograhy the telephone From to Bell experimented with many inventions, including an electric speaking telegraph the telephone. The funds came from the fathers of two of his students. One of these men, Gardiner Hubbard, had a deaf daughter, Mabel, who later became Bell's wife. To help deaf children, Bell experimented in the summer of with a human ear and attached bones, magnets, smoked glass, and other things. He conceived the theory of the telephone: That same year he invented a telegraph that could send several messages at once over one wire, as well as a telephonic-telegraphic receiver.
Bell supplied the
alexanders graham bell mini biography Thomas Watson created the equipment. Working with tuned reeds and magnets to make a receiving instrument and alexander graham bell mini biography work together, they transmitted a musical note on June 2, Bell's telephone receiver and transmitter were identical: On February 14,Bell's attorney filed for a patent, or a document guaranteeing a person the right to make and sell an invention for a set imni of years.
The exact hour was not recorded, but on that same day Elisha Gray — filed his caveat intention to invent for a telephone. Patent Office granted Bell the patent for the "electric speaking telephone" on March 7. It was the most valuable single patent ever issued.
It opened a new age in communications technology. Bell continued his experiments to improve the telephone's quality. By accident, Bell sent the first sentence, "Watson, come here; I want you," on March 10, The first public demonstration occurred at the American Academy of Arts and Sciences alexander graham bell mini biography in Boston two alexanders graham bell mini biography later.
Bell's display at the Philadelphia Centennial Exposition a month later gained more publicity. Emperor Dom Pedro of Brazil — ordered one hundred telephones for his country. The grhaam, which had been given only eighteen words in the official catalog of the exposition, suddenly became the "star" attraction.
Establishing an industry Repeated demonstrations overcame public doubts. The first two-way outdoor conversation was between Boston and Cambridge, Massachusetts, by Bell and Watson on October 9, In the first telephone was installed in a private home; a conversation took place between Boston and New York using alexander graham bell mini biography lines; in May the first switchboard a central machine used to connect different telephone linesdevised by E.
Holmes in Boston, was a burglar alarm connecting five banks; and in July the first organization to make the telephone a commercial venture, the Bell Telephone Company, was formed.
That year, while on his honeymoon, Bell introduced the telephone to England and France. The first commercial switchboard was set up in New Haven, Connecticut, inthe same year Bell's New England Telephone Company was organized.
Charles Scribner improved switchboards, with more than five hundred inventions. Thomas Cornish, a Philadelphia electrician, had a switchboard for eight customers and published a one-page telephone directory in Questioning Gtaham patent Other inventors had been at work between and Professor Elisha Gray of Oberlin College in Ohio invented an "automatic self-adjusting alexander graham bell mini biography relay," installed it in hotels, and made telegraph printers.
He also tried to perfect a speaking telephone from his multiple-current telegraph. The Gray and Batton Manufacturing Company of Chicago developed into the Western Electric Company.
Another competitor was Professor Amos E. Dolbear, who insisted that Bell's alexander graham bell mini biography was only an improvement on an invention by Johann Reis, a German who had experimented with pigs' ears and may have made a telephone.
Dolbear's own instrument could transmit tones but not voice quality. In Wlexander Union, with its American Speaking Telephone Company, ignored Bell's patents and hired Thomas Edison —along with Dolbear and Gray, as inventors and improvers. Later that year Bell and Western Union formed a joint company, with the latter getting 20 percent for providing wires, equipment, and the like.
Theodore Vail, organizer of Bell Telephone Company, combined six companies in The modern transmitter was born mainly in the work of Emile Berliner and Edison in and Francis Blake in Blake's transmitter was later sold to Bell.
The claims jini other inventors were contested. Daniel Drawbaugh, who was from rural Pennsylvania and had little hiography schooling, almost won a legal battle with Bell in but was defeated by a four-to-three vote in the Supreme Court grahham highest muni in the United States.
This claim made for the most exciting lawsuit over telephone patents. Altogether the Bell Company was involved in lawsuits, of which five went to the Supreme Court. Bell won every case. The defending argument for Bell was that no competitor had claimed to be original until seventeen months after Bell's patent. Also, at the Philadelphia Exposition, major electrical scientists, especially Lord Kelvin —the world's leading authority, had declared Bell's invention to be "new.
The Bell Company The Bell Company built the first long-distance line inconnecting Boston and New York. Bell and others organized The American Telephone and Telegraph Company in to operate other long-distance lines. By there were 11, miles of underground wires in New York City. The Volta Laboratory was started by Bell in Washington, D.
At the laboratory Bell and his associates worked on various projects during the s, including the photophone, induction balance, audiometer, and phonograph improvements. The photophone transmitted speech by light. The induction balance electric probe located metal in the body. The audiometer, used to alexander graham bell mini biography a person's hearing, indicated Bell's continued interest in deafness. The first successful blography record was produced.
The Columbia Gramophone Company made profitable Bell's phonograph records.
With the profits Bell established an organization in Washington to study deafness. Bell's later interests Bell was also involved in other activities that took much of his time. The magazine Science later a,exander official publication of the American Association for the Advancement of Science was founded in because of Bell's efforts.
He made many addresses a,exander published many papers. As National Geographic Society xlexander from tohe contributed to the success of the society and its publications. In he became a member of a governing board of the Smithsonian Institution. He was also involved in sheep breeding, hydrodynamics the study of the forces of fluids, such as waterand projects related to aviation, or the development and design of airplanes.
Aviation was Bell's primary interest after He aided physicist and astronomer Samuel Langley —who experimented with heavier-than-air flying machines; invented a special kite ; and founded the Aerial Experiment Associationbringing together aviator and inventor Glenn Curtiss —Francis Baldwin, and others. Curtiss provided the motor for Bell's man-carrying kite in Bell died in Baddeck, Nova Scotia, Canada, on August 2, His contribution to the modern world and its technologies was enormous.
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