In 1870, two well known inventors both independently designed devices that convey sound along electrical cables. Those inventors Alexander Graham Bell and Elisha Gray. Both devices were registered in the patent office hours of each other. There followed a bitter legal battle for the invention of the telephone, which Bell subsequently won.
The telegraph and telephone are very similar in concept, and it was Bell's attempts to improve the telegraph that success in the phone.
The telegraph was a very successful communication system for about 30 years Bell began experimenting. The main problem was the telegraph that used Morse code, and was limited to sending and receiving one message at a time. Bell had a good understanding of the nature of sound and music. This made it possible to detect the possibility of transmitting more than one message at a time along the same wire. Bell's idea was not new, others before him envisioned a multiple telegraph. Bell offered his own solution, the "Harmonic Telegraph". It is based on the principal that musical notes could be sent simultaneously down the same wire if those notes differed in pitch.
The latter part of 1874 Bell experiment progressed enough for him to inform close family members about the possibility of a multiple telegraph. Bell's future father in law, attorney Gardiner Green Hubbard saw the opportunity to break the monopoly exerted by the Western Union Telegraph Company. He gave Bell the financial backing he needed to continue the work of developing multiple telegraph. However, Bell did not mention that he and his partner, another brilliant young electrician Thomas Watson, developed ideas that occurred to him during the summer. This idea was to create a device that could transmit the human voice electrically.
Bell and Watson continued to work on the harmonic telegraph at the insistence of Hubbard and a few other financial backers. During March 1875 Bell met without a man named Joseph Henry knew Hubbard. Joseph Henry was the acclaimed director of the Smithsonian Institution. He listened closely Bell ideas and offered words of encouragement. Both Bell and Watson are encouraged Henry's opinions and continued their work even greater enthusiasm and determination. By June 1875 it achieved the goal of creating a device that could transmit the speech soon realized electrically. Their experiments proved different voices change the strength of the electrical current in the wire.
Now I had to do was build a device with a suitable membrane capable of turning those tones for different electronic circuits and receiver to reproduce the variations and turn them back into audible form at the other end. In early June, Bell discovered that while working on the harmonic telegraph, he heard a voice over the line. It was the sound of a twanging clock spring. It was March 10, 1876 that Bell was to finally realize the success and communications potential of the new device. The possibilities of being able to talk down an electrical wire far outweigh these modified telegraph system, which is primarily the only points and lines.
According to Bell notebook entry for that date, it describes the most successful experiment with the new equipment, the telephone. Bell said the assistant Watson, who was in the next room, instrumentation, and said. "Mr. Watson, come here, I want to talk to you"
Alexander Graham Bell was born on 3 March 1847 in Edinburgh, Scotland. elocution and speech correction family of leading authorities. He is well-groomed and educated career the same specialty. The only age 29, in 1876, he invented and patented the phone. His thorough knowledge of sound and acoustics helped immensely during the development of the phone, and gave him the benefit of others working on similar projects at that time. Bell was an intellectual of quality rarely found since his death. He was a man always striving for success and searching for new ideas for promotion and development.
The phone – dates
1. 1874 – Main phone was found.
2. 1876 – Alexander Graham Bell invents the telephone, beating Elisha Gray in under an hour.
3. 1877 – The first permanent outdoor telephone wire was completed. It stretched a distance of just three miles. This was closely followed by the United States, the world's first commercial phone service.
4 1,878 – A operable to improve the exchange, which is allowed to be switched between the subscriber calls instead of direct lines. Designated numbers of subscribers started by and not their names –
6, 1880 – The long-distance services grew in this period of metallic circuits.
7. 1888 – developed by Hammond V. Hayes Common elements, allows one central battery every phone a replacement, rather than individual units have their own battery.
8. 1891 – invented the first automatic dialing system is a Kansas City entrepreneur. He believed that crooked operators were sent to potential customers elsewhere. It was meant to get rid of players completely.
9, 1900 – The first coin-operated telephone installed in Hartford, Connecticut.
10. 1904 – developed by "French Phone" Bell Company. It was a simple transmitter and receiver unit.
11, 1911 – American Telephone and Telegraph (AT & T) acquire the Western Union Telegraph Company in a hostile takeover. They purchased stocks in the company's secret and the two eventually merged.
12 1918 – It is estimated that approximately ten million Bell system telephones were in service throughout the US
13, 1921 – The switching a large number of calls allowed the use of phantom circuits. This allowed three conversations to take place two pairs of wires.
14. 1927 – The first transatlantic service to New York and London became operational. The radio signal is transmitted waves.
15, 1936 – Studies of electronic telephone exchanges began and eventually perfected in the 1960s, the electronic switching system (SES).
16, 1946 – The world's first commercial mobile phone service put into operation. It can be connected to mobile phone networks using radio waves of vehicles.
17. 1947 – Microwave radio technology used for the first time long-distance phone calls.
18, 1947 – The transistor was invented Bell Laboratories.
19. 1955 – began in the laying of transatlantic telephone cable.
20, 1962 – The world's first international communications satellite, Telstar was launched.
21, 1980 – The development of fiber optic cables during this decade, offered the potential to carry much larger volumes of calls than satellite or microwave.
22, 1980, 1990 and published – a tremendous advance microelectronic technology developed over the past two decades, the cellular (mobile) phones to advance a truly astonishing rate. A portable (mobile) telephone own central transmitter that allows you to receive broadcast smooth when you enter and exit the cell.
There are those who believe that the impact on the lives of the phone was negative. Whatever the belief that the UN no doubt that the invention and development of the phone was a huge influence on the way we live our lives and go to our daily business.
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