Alexander Graham Bell
(1847-1922)
Many other people before Bell had unsuccessfully tried to transmit the human voice across a distance. He was the first person to Achebe success in transmitting voice and speech from one place to another by electrical means. Others since then have helped in the improvement of the invention called "Telephone", but undoubtedly he is well known as the father of the electric telephone.
Alexander Graham Bell was born in Edinburgh, Scotland, on March 3, 1847. His family was very much interested in the study of sound. He had his education at Edinburgh University and later at University College, London. Soon his family he moved to Brantford, America. His grandfather was a speech tutor and so was his father. They both had devoted themselves to the study of human speech and to teaching the deaf to speak. It inspired and encouraged him to follow their profession. He became deeply interested in helping the deaf to speak.
Bell opened a school in Boston, U.S. for the teachers of the deaf where he had moved in 1870. In 1873 he became professor of vocal psychology at Boston University. There he met a rich American lawyer whose daughter had become deaf in her early childhood. He taught the girl how to speak. He began to love her so much that he married her (Mabel Hubbard) in july 1877.
It was during this period when he began teaching the deaf that he experimented successfully in long distance voice and speech communication in 1876. One day, he was working with his assistant Thomas Watson in another room on another floor to send more than one telegraph signal on the same line at the same time. Bell was busy to hearing something on his receiver when suddenly vibrations in the wire stopped and as Watson in the other tapped his fingers, this sound was heard by bell. This was followed by many more such experiments until the telephone was invented on march 10, 1876.
Bell's first speech on telephone was, "Mr.Watson, come here: i want you. "bell had accidentally spilled battery acid on his clothes and so automatically had called out his assistant. Watson was at the other end of the telephone circuit in the same building and he heard the call, the first message transmitted by telephone. Bell applied for a patent on february 14, 1876 and it was granted. the invention revolutionized the idea of communication forever. its demonstration at the centennial exposition of 1876 in philadelphia provided a great sensation and success. By the end of the year, conversation between new york and Boston on telephone had become a reality.
In 1880 Bell was awarded the french government's Volta prize of 50'000 francs for his invention. With this prize money Bell established the Volta Laboratory and the American association to promote teaching of speech to the deaf in Washington D.C. It is here that Bell produced the gramophone by improving upon edison's phonograph. With the money earned from these inventions, Bell started the Volta Bureau for Research in Deafness. The name of the Volta Laboratory and the American association was changed to the Alexander Graham Bell association for the deaf in 1956. It is an international information center for the oral education of the deaf.
The story of invention of telephone is also dramatic as that of his invertor. Now telephone is very popular and convenient tool for communication. When you speak, your sound waves strike a diaphragm in the transmitter of the telephone. The diaphragm vibrates back and forth in just the same manner the molecules of air are vibrating. These vibrations cause a disk in the receiver at the other end to vibrate exactly as the diaphragm in the transmitter is vibrating. And these sound waves reaching the ear of the person at the other end have the same effect as they would have if they were heard directly from the mouth of the speaker.
Bell became the president of the National Geographic Society in 1898. He actually succeeded his father-in-law. Trough this magazine he promoted a better understanding of life in distant place through pictures. In this noble task he was helped greatly by his would be son-in-low, Gilibert Grosvenos. Bell also invented an audimeter which is used in measuring the intensity of sound. He was also well-known for experiments in aviation.His fascination with fight made him build man- carrying kites and vertical take off propeller which was later developed into the rotor of the helicopter. He also produced the faster boat of his time. He was present at the seance when the first Trans-continental telephone line was opened in 1915. From the coast, Bell again spoke the same words to his old assistant on the West coast. "Mr. Watson come here: i want you." His wife founded the Aerial experiment association. It was the first research organization founded by a woman. Bell breathed his last on August 2, 1922 at his estate on cape Breton Island in Nova Scotia. During Bell's funeral service all the telephone of the Bell system were kept silent. He was elected to the Hall of Fame at New York University in 1950.
(1847-1922)
Many other people before Bell had unsuccessfully tried to transmit the human voice across a distance. He was the first person to Achebe success in transmitting voice and speech from one place to another by electrical means. Others since then have helped in the improvement of the invention called "Telephone", but undoubtedly he is well known as the father of the electric telephone.
Alexander Graham Bell was born in Edinburgh, Scotland, on March 3, 1847. His family was very much interested in the study of sound. He had his education at Edinburgh University and later at University College, London. Soon his family he moved to Brantford, America. His grandfather was a speech tutor and so was his father. They both had devoted themselves to the study of human speech and to teaching the deaf to speak. It inspired and encouraged him to follow their profession. He became deeply interested in helping the deaf to speak.
Bell opened a school in Boston, U.S. for the teachers of the deaf where he had moved in 1870. In 1873 he became professor of vocal psychology at Boston University. There he met a rich American lawyer whose daughter had become deaf in her early childhood. He taught the girl how to speak. He began to love her so much that he married her (Mabel Hubbard) in july 1877.
It was during this period when he began teaching the deaf that he experimented successfully in long distance voice and speech communication in 1876. One day, he was working with his assistant Thomas Watson in another room on another floor to send more than one telegraph signal on the same line at the same time. Bell was busy to hearing something on his receiver when suddenly vibrations in the wire stopped and as Watson in the other tapped his fingers, this sound was heard by bell. This was followed by many more such experiments until the telephone was invented on march 10, 1876.
Bell's first speech on telephone was, "Mr.Watson, come here: i want you. "bell had accidentally spilled battery acid on his clothes and so automatically had called out his assistant. Watson was at the other end of the telephone circuit in the same building and he heard the call, the first message transmitted by telephone. Bell applied for a patent on february 14, 1876 and it was granted. the invention revolutionized the idea of communication forever. its demonstration at the centennial exposition of 1876 in philadelphia provided a great sensation and success. By the end of the year, conversation between new york and Boston on telephone had become a reality.
In 1880 Bell was awarded the french government's Volta prize of 50'000 francs for his invention. With this prize money Bell established the Volta Laboratory and the American association to promote teaching of speech to the deaf in Washington D.C. It is here that Bell produced the gramophone by improving upon edison's phonograph. With the money earned from these inventions, Bell started the Volta Bureau for Research in Deafness. The name of the Volta Laboratory and the American association was changed to the Alexander Graham Bell association for the deaf in 1956. It is an international information center for the oral education of the deaf.
The story of invention of telephone is also dramatic as that of his invertor. Now telephone is very popular and convenient tool for communication. When you speak, your sound waves strike a diaphragm in the transmitter of the telephone. The diaphragm vibrates back and forth in just the same manner the molecules of air are vibrating. These vibrations cause a disk in the receiver at the other end to vibrate exactly as the diaphragm in the transmitter is vibrating. And these sound waves reaching the ear of the person at the other end have the same effect as they would have if they were heard directly from the mouth of the speaker.
Bell became the president of the National Geographic Society in 1898. He actually succeeded his father-in-law. Trough this magazine he promoted a better understanding of life in distant place through pictures. In this noble task he was helped greatly by his would be son-in-low, Gilibert Grosvenos. Bell also invented an audimeter which is used in measuring the intensity of sound. He was also well-known for experiments in aviation.His fascination with fight made him build man- carrying kites and vertical take off propeller which was later developed into the rotor of the helicopter. He also produced the faster boat of his time. He was present at the seance when the first Trans-continental telephone line was opened in 1915. From the coast, Bell again spoke the same words to his old assistant on the West coast. "Mr. Watson come here: i want you." His wife founded the Aerial experiment association. It was the first research organization founded by a woman. Bell breathed his last on August 2, 1922 at his estate on cape Breton Island in Nova Scotia. During Bell's funeral service all the telephone of the Bell system were kept silent. He was elected to the Hall of Fame at New York University in 1950.
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