The invention and history of telecommunications. The Greatness of Westerners Series 3.

 The invention of wired telecommunications, symbolized by Morse code in the 1840s, the invention of American bell phones in the 1870s, and the invention of Marconi wireless communication in Italy in the 1890s are very important. In addition, the revolution of Internet, e-mail, and mobile phones in the last 10 years has been equally revolutionary... I miss the high-tell times. ==================================================The article is very popular. Communication began with the occurrence of mankind. In order for humans to form and live in a society, the necessity of communicating with each other between individuals and society is an absolute requirement. If the other person is close, the doctor communicates in gestures or language, but as the distance between the two increases, it becomes impossible to communicate through words or gestures, or through light, acting, or sound. With the invention of letters, communication developed, and letters were carved on stone, metal plates, woodblocks, and animal skins to convey the contents. The historical emergence of an organized communication system was a station system established for military purposes for the rule of the Persian Empire during the three generations from King Cyrus (r. 559 BC to 530 BC BC) to King Darius in the Persian Empire, and was inherited by the Roman Empire. Subsequently, in the 12th century, there were correspondence between international students from universities located in major European countries and their hometowns in Europe, communication by butcher centered on Schwaben in southern Germany, and communication using silver door cases in 1484. The origin of the communication business was Francesco de Dagis of Italy during the Holy Roman Empire, who established a postal network within the empire in 1516 with the permission of the Roman Emperor to start a private business for the general public. The modern postal system originated in 1840 when British R. Hill devised a flat rate system based on stamps, which is the basis of the postal system around the world. Modern mail first began in Korea with the opening of the Post Office in 1884 between Seoul and Incheon, but resumed in 1895 by opening post offices in Seoul, Incheon, and Gaesong after the Gapsin Coup. Meanwhile, telecommunications began in 1809 with Austria's Jommeering building a telegraph using water electrolysis devices, invented by British C. Wheatstone and F.W. Cook in 1837, and patented by American youth S.F.B.Moss in 1844. Second, the telephone was discovered and invented by Paige (US: 1837), C. Bursul (France: 1854), P. Rice (Germany: 1861), but none of them reached the practical stage, and the telephone invented by A.G. Bell (1876) became the originator of today's telephone. The telegraphy in Korea began on September 28, 1885, when the Seoro Line was opened and the telegraphy transmission began between Hansung and Incheon. Meanwhile, the telephone originated from the installation and operation of a telephone in the palace in 1996, and in March 1902, the telephone service between Hansung and Incheon began to be handled. Wireless communication occupies an important position in telecommunication. In 1895, G. Marconi of Italy invented a method of communication by radio waves by combining his own antenna and earth with an electromagnetic wave discovered by H. Hertz of Germany and a detector invented by E. Branley of France. When the news spread, its practicality and novelty were recognized, and countries competed for research and practicality. In particular, the UK established Marconi Radio Company in 1896, and began to communicate between maritime and land stations or between ship stations. Britain, which was dominating the world at the time, was indispensable to combine its home country and colonies everywhere. In the early days of the invention of wireless communication, many countries believed that the installation and operation of radio stations, which are particularly important for navigation and defense, should be under state control, and the state took charge of them. Meanwhile, wireless communication has the essence that cannot be transferred by a specific country. These are the spatial propagation of radio waves and the commonality of handling methods. Therefore, countries recognized that wireless communication could be effective only by consulting and agreeing to common technical standards and handling laws, and signed the World Radio Treaty in 1903 and 1906 after repeated international conferences. Wireless communication in Korea began in 1910 when radio stations were installed and operated in Gwangje Lake and Wolmido Lighthouse, which also served as route signs and customs monitoring. In the same year, radio stations were also installed in Mokpo and Socheongdo lighthouses. As a coastal station, the Seoul Radio Bureau (currently the Seoul Central Radio Station and the Incheon Radio Station) was established in 1923, and the Mokpo, Cheongjin, and Jeju Radio stations were established in 1924, respectively, to perform both coastal and fixed tasks.