Amarjeet's Great Links: Feb 7, 2012

During the 1870 Mother, power cable with two well known inventors both independently designed devices that can transmit voice. The inventors were Alexander Graham Bell and Elisha Gray. Both devices are on the patent office within hours of each other were registered. There is a telephone, which Bell subsequently won a bitter legal battle in the search.

Telegraph and Telephone is the same idea, and it struck a telephone wire with a success that it was trying to improve.

Telegraph communication system is very successful for nearly 30 years, was struck before the experiment began. The main problem with the Morse code telegraph was used, and there was a message to send and receive at one time is limited. Bell was a good idea about the sound and music of Nature. The wire with them at the same time more than likely be able to transmit the message. Mother Bell is not a new idea, was, as others before it was conceived several paces. Bell's solution to the "harmonic telegraph" offer. The main musical notes that can be sent simultaneously to the wire off, if it was based on notes differed in pitch.

By late 1874, sufficient progress was Mother Bell experimented for close family members to inform them about the possibility of a multiple telegraph. Mother Bell, the future father of the law, attorney for the Western Union Telegraph Company, Gardiner Greene Hubbard exerted by the opportunity to break the monopoly. He struck them for their financial support of many developing countries to work with him on the wire. However, Bell mentions that he and his accomplice, another brilliant young electrician Thomas Watson, an idea that was developing in the summer, he failed. The idea was to create a device that can power the human voice.

Bell and Watson, and other financial backers to Hubbard's insistence on continuing to work on the harmonic telegraph. During March 1875, Bell met with a man called Joseph Henry Hubbard without knowledge. Joseph Henry of the Smithsonian Institution was also a respected director. Bell thought he sambhalata closely and offer words of encouragement. By Henry opinions on both Bell and Watson was, and still continued with great vigor and decision. On June 1875, he soon realized electrical device that the speech could be made to achieve their goal. His experiments had to be replaced several tons of wire an electric current of strength.

Now, what were they appropriate for a variety of electronic circuits and the receiver to reproduce them off to another format at the end of audible tones in the membrane with a device capable of turning the build. In early June, Bell discovered that when they were working on the harmonic telegraph, he heard a noise on the wire. The voice was twanging clock spring. It was on 10th March 1876 that Bell finally communication and its potential success of the concept of the new device. The possibility of an electrical wire that is capable of improved telegraph system, which is required by dots and dashes on a blank was outweighed.

Mother Bell notebook entry by that date, the most successful in his new piece of equipment, describes an experiment using the telephone. Bell to his assistant Watson, who spoke in the next room, equipment, and stated that "Mr. Watson, come here, I want to talk to you."

Alexander Graham Bell on 3rd March 1847 Edinburgh, Scotland, was born. His family were the leading authorities in elocution and speech correction. He is a career to follow suit, and was educated in the same specialty. Only 29 years old and was discovered in 1876, he patented the telephone. During the development of sound and acoustics in the full knowledge of their telephone help, and he is at work on a similar project on the edge of the other. Bell died, and was hardly an intellectual quality. He is a man who is always striving and success to nurture and develop new ideas had been searching for.

Telephone - Important Dates

1. 1874 - Principal of the telephone was uncovered.

2. 1876 - Alexander Graham Bell invented the telephone, beating Elisha Gray by a matter hours.

3. 1877 - The very first permanent outdoor telephone wire had been completed. It is only a distance of three miles stretched. The world's first commercial telephone service was closer to the US.

4. 1878 - The workable exchange was developed, which calls for candidates rather than the direct line between the switch is enabled.

5. 1879 - The number of candidates nominated by their name and started.

6. 1880 Mother - long distance circuits to the metal during the entire period of extended service.

7. 1888 - The common battery system developed by Hammond V. Hayes, all units have their own battery, rather than relying on a central battery power allows for an exchange on all telephones.

8. 1891 - The first automatic dialing system invented by a Kansas City Undertaker. They believed that crooked operators were sending them to potential customers elsewhere. It was intended for operators to get away together.

9. 1900 - The first coin operated telephone, Hartford, Connecticut in installed.

10. 1904 - "The French call the" Bell has been developed by the company. The transmitter and receiver in the handset is easy.

11. 1911 - American Telephone and Telegraph (AT & T), Western Union Telegraph Company acquired in a hostile takeover. They are hidden in the company's stocks to buy and the two eventually merged.

12. 1918 - It is estimated that millions of service in the Bell Telephone System is a US

13. 1921 - A large number of calls was made possible by switching the use of phantom circuits. The three failures, two pair of talking going on location to allow dissolved.

14. 1927 - First transatlantic service to London from New York to become operational. This signal was transmitted by radio waves.

15. 1936 - electronic telephone exchanges began research in 1960 and finally an electronic switching system (SES) with the perfected.

16. 1946 - World's first commercial mobile phone service put into operation. It is a telephone network via radio waves from the moving vehicle can be linked.

17. 1947 - Microwave radio technology was first used for long distance phone calls.

18. 1947 - The transistor was at Bell laboratories.

19. 1955 - the start of the transatlantic telephone cable laying.

20. 1962 - the world's first international communications satellite, Telstar, was launched.

21. 1980 Mother - This is the decade for the development of fiber optic cable, satellite or microwaves very large volumes of calls carry a potential offer.

22. 1980 Mother, 1990 Mother's present - the past two decades, huge advances on the micro electronic technology in cellular phones (mobile) to enable the development of a truly astonishing rate increases. Cellular phone (mobile) Seamless its transmissions to the central, as it enters and exits the cell allows the transmitter.

Article Source :- http://dianedoe14876.typepad.com/blog/2012/02/the-telephone-a-brief-history.html

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Tuesday, February 7, 2012

The Telephone - A Brief History

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