British physicist and chemist, founder of electromagnetic field theory.
Electromagnetic induction was discovered in 183 1 year.
1833 discovered the law of electrolysis.
1845 discovered that the tilted wavefront of light rotates in a magnetic field (Faraday effect).
Morse Samuel Finley Brissemore (179 1- 1872)
American inventor and telegraph inventor
The earliest electromagnetic telegraph was developed in 1837. 1983, the Morse code of stippling combination was born. It took Morse two years to build a 64-kilometer telegraph line from Washington to Baltimore. The announcement began on May 24th, 1844, which turned a new page in the history of human communication.
Maxwell James Clark Maxwell (183 1- 1879)
British physicist and chemist, the founder of classical electromagnetic theory.
Established and led the first special issue laboratory in Britain-Cavendish Laboratory. The research results of electromagnetic phenomena before the middle of19th century are summarized, and the basic equations of electromagnetic field, namely Maxwell equations, are established. From this theory, it is concluded that the electromagnetic process propagates at a certain speed (equivalent to the speed of light) in space, thus completely denying the wrong concept of distance action and drawing the conclusion that the essence of light is electromagnetic wave.
Bell Alexander Graham Bell (1847- 1922)
Scientist, inventor of the telephone
On March 1876, 10, the conversation was successful through the telegraph line, and its collaborators heard the sound from Bell for the first time through the liquid transmitter and the tuned reed receiver. 1878, he and his collaborators successfully conducted an open long-distance telephone experiment between Boston and new york, 300 kilometers away, and founded Bell Telephone Company, which promoted the rapid development of telephone.
Hertz heinrich rudolf hertz Company (1857- 1894)
German physicist, one of the founders of classical dynamics.
1887, Hertz first proved the existence of electromagnetic waves through experiments with its own oscillator. It is studied that the propagation speed in air is equal to the speed of light, and the equivalence of the basic characteristics of electromagnetic wave and light wave is established. Firstly, the phenomenon of photoelectric effect was discovered. In memory of him, people use hertz as the unit of oscillation frequency.
Alexander Stepanovich Popov, popov (1859- 1906)
Russian physicist, one of the founders of radio communication.
1894, a radio receiver was manufactured.
1895 published an important paper "the relationship between metal powder and electric oscillation".
1896, a short telegram was sent between buildings 250 meters apart.
Marconi guglielmo Marconi (1874- 1937)
Italian inventor and founder of radio communication.
1895 successfully carried out the experiment of radio wave transmission signal. Starting from 1897, he conducted a series of radio communication experiments to promote the practical application of radio communication. 190 1 1 in February, 2000, long-distance radio signal transmission was realized on both sides of the Atlantic for the first time, which opened up a new era of long-distance radio communication.
Li Qiang (1905- 1996)
China radio and antenna expert, one of the pioneers of new China broadcasting.
People from Changshu, Jiangsu. 1929, the first domestic radio transceiver was manufactured. 193 1 was sent to the Soviet union in, during which he wrote the book "Send Diamond Antenna", which contributed to the theory of this kind of antenna. 1947, he led the construction of high-power transmitters and directional antennas for radio stations. After the founding of People's Republic of China (PRC), Li Qiang served as the director of the General Administration of Radio and Telecommunications of the Ministry of Posts and Telecommunications. 1950, he served as director of the international telecommunication union.
Mengmeng grocery store (1906- 1995)
China experimental physicist, electronic scientist and educator.
Laoting, Hebei,/kloc-0 graduated from yenching university in 1928. 1936, he received his doctorate from California Institute of Technology. He has taught in yenching university, The National SouthWest Associated University and Tsinghua University for more than 60 years, and has made great achievements in personnel training, laboratories and teaching materials cities. He has made important contributions to the scientific research in the fields of microwave electronics, spectroscopy and cathode electronics. Author of cathode electronics.
Feng Bingquan Feng Bingquan (19 10- 1980)
China electronic scientist and educator.
Hebei Anxin Ren I 1930 graduated from the Physics Department of Tsinghua University. 1943, he received a doctorate from Harvard university. The research of personal radio electronics has contributed to the theory of radio oscillation, electroacoustics and underwater acoustic engineering. The principle of phase angle compensation is put forward, and the pulse width modulation and amplitude modulation broadcast transmitter and radio frequency wave elimination language processor are developed. He is the author of Fundamentals of Electroacoustics and Radio Transmitting Equipment.
Wang Shiguang, Wang Shiguang (19 15-2003)
Pioneer of wireless communication and electronic industry in New China.
Tianjin people. 1935 was admitted to the Department of Electrical Engineering in Tsinghua University and took an active part in the Anti-Japanese National Salvation Movement. 1940 to 1947 organized the maintenance, production and technical personnel training of radio stations in the liberated areas, successfully established Handan Radio Station, and was awarded [special hero]. 1949 was responsible for taking over the telecommunications enterprises of the former Kuomintang in Beijing and Tianjin. 1963 served as the fourth deputy minister of the Ministry of Machinery Industry.