Question 2: Who invented radio? There is still controversy about who invented the radio station. 1893, Nicholas? Nikola tesla publicly demonstrated radio communication for the first time in St. Louis, Missouri, USA. He described and demonstrated the basic principles of radio communication in the reports of Franklin College in Philadelphia and the National Electric Light Association. The instrument he made contains all the basic components of the radio system before the invention of the electron tube. Ancient Grimau? Guillermo Marconi holds the British patent number, which is widely regarded as the world's first patent on radio technology. 12039, "improvement of electric pulse and signal transmission technology and required equipment". Nicholas? Tesla 1897 obtained the patent of American radio technology. However, in 1904, the US Patent Office revoked its patent right and granted Marconi a patent for inventing radio instead. This move may be supported by Marconi's economic supporters in the United States, including Thomas? Edison, Andrew? The result of Carnegie's influence. 1909, Marconi and Carl? Ferdinand? Karl ferdinand braun won the Nobel Prize in Physics for his "contribution to the invention of wireless telegraph". 1943, shortly after Tesla's death, the US Supreme Court re-affirmed Tesla's patent. This decision admitted that his invention had been completed before Marconi's patent. Some people think that this decision is obviously for economic reasons. In this way, the United States in World War II can avoid paying Marconi patent royalties.
Question 3: Who invented the first radio station in China? There is still controversy about who invented the radio station.
1893, Nicholas? Nikola tesla publicly demonstrated radio communication for the first time in St. Louis, Missouri, USA. He described and demonstrated the basic principles of radio communication in the reports of Franklin College in Philadelphia and the National Electric Light Association. The instrument he made contains all the basic components of the radio system before the invention of the electron tube.
Ancient Grimau? Guillermo Marconi holds the British patent number, which is widely regarded as the world's first patent on radio technology. 12039, "improvement of electric pulse and signal transmission technology and required equipment".
Nicholas? Tesla 1897 obtained the patent of American radio technology. However, in 1904, the US Patent Office revoked its patent right and granted Marconi a patent for inventing radio instead. This move may be supported by Marconi's economic supporters in the United States, including Thomas? Edison, Andrew? The result of Carnegie's influence. 1909, Marconi and Carl? Ferdinand? Karl ferdinand braun won the Nobel Prize in Physics for his "contribution to the invention of wireless telegraph".
1943, shortly after Tesla's death, the US Supreme Court re-affirmed Tesla's patent. This decision admitted that his invention had been completed before Marconi's patent. Some people think that this decision is obviously for economic reasons. In this way, the United States in World War II can avoid paying Marconi patent royalties.
1898, Marconi opened the world's first radio factory in Hall Street, chelmsford, England, with about 50 employees.
Radio has gone through various stages of development from electron tube to transistor to integrated circuit, from short wave to ultrashort wave to microwave, from analog mode to digital mode, from fixed use to mobile use, and radio technology has become an important pillar of modern information society.
[Edit this paragraph] Radio technology was introduced into China.
In the 23rd year of Guangxu (1 May 2, 897), on April1day, the 25th volume of The Times published a translation of "Wireless Telegraph", which was the first time that the word wireless telegraph appeared in China. Since then, the prelude to the spread of wireless telegrams through periodicals has been opened. The spread of early wireless telegraph technology was mainly comprehensive journals, mostly articles introducing new things, and then scientific papers introducing principles appeared, including the latest technologies and inventions. With the development of wireless telegraph technology, the contents of periodicals have also changed, and many legal articles have appeared. Judging from the articles circulating in periodicals in the late Qing Dynasty, it has formed its own system, which laid a theoretical foundation for the emergence of professional periodicals and the formation of discipline system in the future.
Question 4: Radio broadcast 1902, who invented Banat in the United States? Stepfield made the first radio broadcast, and from then on, the Society of Gallbladder entered the era of radio communication and broadcasting.
Question 5: The inventor of radio communication is in Britain. People regard Maxwell as the pioneer of radio and think that he was the first to point out the existence of electromagnetic waves. In the United States, some people think that deforest is the father of radio, because he invented the triode, which is the heart of radio communication equipment. In Russia, only popov is recognized as the founder of radio communication. In Croatia and everyone who knows Nikolai? Everyone in Tesla admits that Tesla is the father of radio. In the eyes of western scientists, Italian Marconi was the inventor of radio communication, so he won the Nobel Prize in Physics. In Germany, people think that Hertz is the pioneer of radio, because he first proved the existence of electromagnetic waves. The vibration frequency unit of electromagnetic wave is named after his surname. Who invented radio communication? It can be said that the invention of radio is the result of many scientists' research and the product of historical development.
Question 6: Who invented radio broadcasting? 1893, Nicholas? Nikola tesla publicly demonstrated radio communication for the first time in St. Louis, Missouri, USA.
Question 7: When was radio communication invented? Military radio communication equipment-a brief history and present situation Military radio communication equipment 1864, British physicist J.C. Maxwell founded the theory of electromagnetic radiation. 1887, German physicist H.R. Hertz proved the existence of electromagnetic waves through experiments. 1895, Italian physicist g Marconi and Russian physicist a.c. popov developed radio transceivers respectively. 1905, China Beiyang new army was equipped with spark radio station for command and communication of naval fleet, with transmission power of 1.5 ~ 2.5 kW and working wavelength of 600 meters. 1927, China's northern expeditionary army began to use electron tube short-wave radio. The people of China * * * began to use 193 1 shortwave radio stations and small transceivers; War of Resistance against Japanese Aggression and the War of Liberation successively used walkie-talkies, ultrashort wave radios and FM radios. After the founding of New China, it was equipped with domestic walkers, ultrashort wave radios, shortwave radios, single sideband radios, repeaters and other communication equipment. Since 1960s, low-power radios and relays equipped by tactical units have been based on semiconductors. Artillery, tanks, planes and ships are all equipped with special radio communication equipment. Since the 1970s, new communication equipment such as scatterers, satellite communication equipment, express telegraph terminals and frequency hopping radio stations have been equipped and used one after another. The development of radio communication equipment has gone through the stages of spark, electron tube, transistor and integrated circuit. The future development trend is: improving reliability, realizing generalization, standardization and serialization; Adopt digital transmission and digital exchange; Using microprocessor technology to realize automation; Widespread use of confidential equipment to improve the security of radio communication; Adopt various measures, such as error detection and correction, spread spectrum technology, adaptive antenna, etc. , improve the anti-interference ability of equipment; Short-wave communication adopts real-time frequency selection equipment, which can detect signal transmission and interference at any time to obtain the best working frequency, and then develop towards the adaptive direction of short-wave communication; The tactical unit will be equipped with a portable comprehensive tester and built-in detection circuit to quickly identify and eliminate faults on the battlefield; Further seek effective methods against electromagnetic pulse; The mobile integrated communication network and regional communication system with wireless transmission and automatic switching will be continuously improved, which will play an important role in realizing the automation of military command.
Question 8: Who invented the wireless telegraph? 1887, German scientist Hertz made a very famous experiment, which proved the existence of radio waves. 1895 Italian young college student Marconi. The radio communication experiment in the yard was successful, and the communication distance was 30 meters. Marconi realized radio communication 2 miles away at 1896. Popov, a young Russian teacher, also realized radio communication. The radio communication experiment across the Bristol Strait was successful. Marconi established the world's first radio equipment company in Britain-Marconi Company in Britain. British wireless telegrams can be sent to the other side of the Atlantic. The antenna at that time was a metal wire pulled by a kite. 1902, the overseas wireless telegraph communication circuit was officially opened between Britain and Canada, which made the international telegraph communication leap into a new stage.