Facts about Telegraph
Telegraphy includes recent forms of data transmission such as fax, email, and computer networks in general.
An electrical telegraph was independently developed and patented in the United States in 1837 by Samuel Morse.
Around the twelfth century, these traditions transferred again to the "twelve days of Christmas" (i.e., Christmas to Epiphany).
Originally, it involved changes that could be observed from a distance, known as optical telegraphy.
The result was deemphasis on telex in the U.S. and a cat's cradle of small U.S. international telex and telegraphy companies.
Telegraphy (from the Greek words tele = far and graphein = write) is the long-distance transmission of written messages without physical transport of letters.
A successful expedient to increase the sending rate was the development of telegraphese.
Both stations of wireless telegraphy were built under Popov's instructions.
Western Union] Telegraph Company had given up its international telegraphic operation in a 1939 bid to monopolize United States telegraphy by taking over ITT's PTT business.
The study of underwater telegraph cables accelerated interest in mathematical analysis of these transmission lines.
The telegraph across the Pacific was completed in 1902, thus telegraph at last was the girdle around the world.
Telegraph messages sent by the telegraph operators using Morse code were known as telegrams or cablegrams, often shortened to a cable or a wire message.
A continuing goal in telegraphy has been to reduce the cost per message by reducing hand-work, or increasing the sending rate.
In 1855, an abbot, Giovanni Caselli, in Italy also created an electric telegraph that could transmit images.
Radiotelegraph proved effective in communication for rescue work when a sea disaster occurred.
The telegraph lines from Britain to India were connected in 1870 (those several companies combined to form the Eastern Telegraph Company in 1872).
Wireless telegraphy is also known as CW, for continuous wave (a carrier modulated by on-off keying, as opposed to the earlier radio technique using a spark gap).
Samuel T. Soemmering constructed his electrochemical telegraph in 1809.
Often these radio links were the first established by government postal and telegraph services (PTTs).
Large telegraphy providers began to develop systems that used telephone-like rotary dialing to connect teletypes.
Telegraphy forms the foundation for almost all of the communication devices we have today.
Another advancement in telegraph technology occurred on August 9, 1892, when Thomas Edison received a patent for a two-way telegraph.
The first transatlantic telegraph cable was successfully completed on July 27, 1866, allowing transatlantic telegraph communications for the first time.
Radiotelegraphy, or wireless telegraphy, involves the transmission of messages using radio.
Nikola Tesla and other scientists and inventors showed the usefulness of wireless telegraphy, radiotelegraphy, or radio, beginning in the 1890s.
A telegraph is a machine for transmitting and receiving messages over long distances, that is, for telegraphy.
Wire picture or wire photo was a newspaper picture that was sent from a remote location by a facsimile telegraph.
The first telegraphs came in the form of optical telegraphs, including the use of smoke signals and beacons, which have existed since ancient times.