A great scientific achievement, from discovery to being used by human beings, often needs the efforts of several generations. Maxwell predicted the existence of electromagnetic waves, but failed to confirm his prediction through personal experiments; Hertz first confirmed the existence of electromagnetic waves through the flashing splash, but categorically denied the possibility of using electromagnetic waves for communication. He believes that if we want to communicate by electromagnetic waves, we need a giant mirror the size of the European continent. However, the flash of "Hertzian Wave" lit up the immortal journey of two young people. The two young men are popov and Marconi.
-1on may 7th, 895, popov, who was only 36 years old, read a paper on "the relationship between metal chips and electric oscillation" at the physics branch of the Russian physical chemistry society in Petersburg, and publicly demonstrated the radio receiver he invented. When his assistant Rybkin turned on the spark generator at the other end of the hall, popov's radio receiver rang; Disconnect the radio generator and the bell will stop immediately. Decades later, in order to commemorate popov's epoch-making initiative on this day, the then Soviet government designated May 7th as "Radio Invention Day". 1on March 24th, 896, popov and Rybkin made their own transceivers at the annual meeting of Russian Physical Chemistry Association, and gave a performance of transmitting Morse code by radio. At that time, the message was "heinrich hertz" to show reverence for the pioneers of electromagnetic waves. Although the communication distance at that time was only 250 meters, it was, after all, the earliest telegraph with clear contents transmitted by radio.
-In June of the same year, Marconi, an Italian youth of 2 1, also invented a radio receiver and obtained a patent in Britain. The communication distance at that time was only 30 meters.
-Marconi 1874 was born in Bologna, Italy on April 25th. He has a wide range of hobbies since he was a child, and he has a strong interest in electricity, mechanics and chemistry. 13 years old, inspired by Hertz's paper confirming the existence of electromagnetic waves, he sprouted a bold idea of using electromagnetic waves to communicate. He experimented with radio communication, sometimes in the attic, sometimes in the yard or on the farm. 1894, he successfully sent and received radio communication two miles apart.
-Marconi's road to invention is full of thorns. After his application for government funding failed, he resolutely went to England on 1896. There, he received the attention and support from the scientific and industrial circles and obtained a patent. 1897, Marconi suggested the establishment of the world's first radio equipment company-Marconi Company of the United States. On May 6th of this year, Marconi successfully conducted radio communication in Bristol Strait. 1898, a yacht race was held in England, and the destination was 20 miles from the coast. Marconi was specially employed by Dublin Express to send messages by radio. As soon as the yacht arrived at its destination, he used radio waves to let the people on the shore know the result immediately, and the audience was ecstatic. It can be said that this is the first practical application of radio communication.
-The invention of diode has played a positive role in promoting Marconi's research. 190 1 year, he successfully conducted long-distance radio communication across the Atlantic. The experiment was carried out between Britain and Finland, which are 2700 kilometers apart. Since then, mankind has ushered in a new era of long-distance communication using radio waves.
-1937 On July 20th, Marconi died in Rome. Tens of thousands of people in Rome held a state funeral for him; The radio telegraph and telephone service of the British Post Office was cut off for two minutes to show respect and mourning for the pioneer who used radio theory for communication and the winner of the 1909 Nobel Prize in Physics.