Intelligence Bureau IB June 2013 Current affairs questions and answers
On which date Union government decided to discontinue the Telegraph Services in India
Union Government on 12 June 2013 decided to discontinue the Telegraph Services in India from 15 July 2013.
The decision of ceasing the services of Telegraph came up after more than 160 years of its being into operations.
The last time Telegraph would be used to send a telegram on 14 July 2013.
Who is first introduced Telegrpah servies in India
William O’ Shaughnessy, a British doctor and inventor,1850
Telegraph services was introduced in India by William O’ Shaughnessy, a British doctor and inventor, who for the first time used different codes to send a message on 1850.
Telegram in India was also known as Taar
The first Telegrpah line was started in India
The first experimental electric telegraph line was started between Calcutta and Diamond Harbour in 1950
In 1851 the services were opened for the use of British East India Company and it was opened to the public in 1854
Telegraph in the world
Telegraphy systems operated in Europe from as early as 1792 in the form of semaphore lines, or optical telegraphs, that sent messages to a distant observer through line-of-sight signals. In 1837, American artist-turned inventor Samuel F. B. Morse conducted the first successful experiment with an electrical recording telegraph.
The first UK public telegraph carrier, the Electric Telegraph Company, originated in 1846
What are the Terms used in Telegrpah
Terms used in Telegraphy
Telegraph coined by Claude Chappe the French inventor of the Semaphore line, who also coined the word semaphore.
Wireless Telegraphy is also known as CW (continuous wave)
First electric telegraph was invented by Schilling
A telegraph message is sent by using Morse code
NATIONS THAT HAVE CLOSED TELEGRAPH SERVICES
| Country | Year of closure | |
| Australia | 7th March 2011 | Australia Post |
| Ireland | 30th July 2002 | Eircom |
| Lithuania | 15th October 2007 | Teo LT |
| Malaysia | 1 July 2012 | Telekom Malaysia |
| Nepal | 1999 | New Zealand Post |
| Unisted States ,Western Union | 27th January 2006 | |
| India | 15th July 2013 | state-owned BSNL |
Different kinds of telegraphy Technology in in series of development
Optical Telegraph: for the first time, telegraph came in form of optical telegraph
Electrical Telegraphs: One of the earliest electromagnetic telegraph designs was created by Pavel Schilling in 1832.
Morse Telegraph: An electrical telegraph was independently developed and patented in the United States in 1837 by Samuel Morse. His assistant, Alfred Vail, developed the Morse code signalling alphabet with Morse. The first telegram in the United States was sent by Morse on 11 January 1838, across two miles (3 km) of wire at Speedwell Ironworks near Morristown, New Jersey.
Oceanic Telegraph Cables: The first commercially successful transatlantic telegraph cable was successfully completed on 18 July 1866. The lasting connections were achieved by the ship SS Great Eastern, captained by Sir James Anderson. The telegraph across the Pacific was completed in 1902, finally encircling the world.
Wireless telegraphy: Nikola Tesla and other scientists and inventors showed the usefulness of wireless telegraphy, radiotelegraphy, or radio, beginning in the 1890s.
Alexander Stepanovich Popov demonstrated to the public his wireless radio receiver, which was also used as a lightning detector, on 7 May 1895.
Telex: In 1935, message routing was the last great barrier to full automation. Systems that used telephone-like rotary dialing to connect teletypewriters were developed by many service providers of telegraphy. These systems (machines) were called “Telex” (TELegraph EXchange). Telex machines first performed rotary-telephone-style pulse dialing for circuit switching, and then sent data by Baudot code.