The radio was invented after the telegraph and the phone were discovered. This technological trio is connected. The radio started as a wireless telegraph. In fact, everything started with a great discovery of radio waves. These waves can transmit music, speech and images through the air. In addition, many devices such as cordless phones, radio and microwave televisions operate through electromagnetic waves.
In 1860, a Scottish physicist named James Maxwell predicts radio waves. In 1886, Heinrich Hertz, another expert, introduced the projection of electricity change in the form of strong radio waves.
After the phone was invented, the experts found that the music could be transmitted over the telephone line. An expert at Guglielmo Marconi discovered how to use radio signals. He was an Italian explorer who showed the feasibility of radio communication. In fact, he was impressed by the discovery of Hertz radio waves. He realized that radio waves could send and receive telegrams. You mentioned it as a powerful wireless telegraph.
The signals encoded in 1896 were transmitted only one mile. Then Marconi acknowledged the possibilities and offered the Italian government, but was rejected. After moving to England, he made a patent and made an attempt. In 1898 Marconi flashed the results of Kingstown Regatta to the Dublin newspaper office. This was the first public broadcast of the great sports event. Soon he started his radio factory and established a connection between Britain and France. In 1901 he also established a relationship with America. In 1909 he received the Nobel Prize in Physics.
The problem was that the wireless telegram only sent signals. In 1921, the transmission of sound was started through this technology. In 1922, Marconi gave the news about short-wave broadcasts. However, he was not the only inventor of the radio. In fact, Nikola Tesla, another great personality who moved to the US in 1884, introduced the theoretical model of radio before Marconi.
Another applicant for the throne of technology is JC Bose. In 1896 he introduced radio transmission to the British governor in Calcutta. Interestingly, the transmission was about 6 kilometers away. It is a fact that the device is connected to the telephoto detector.
In fact, Bose took care of the problem of penetrating water, walls or mountains. In fact, the Marconi Association is the same as the Bose Coherent. Initially, Bose was a little uncertain to apply for a patent because he believed in the freedom of science. However, he asked when some of his friends convinced him in 1901. He received the patent in 1904.
Finally, the radio stations are much better. Global radio telegraph services have been developed because early transmitters have enabled electricity between the electrodes and the circuit that causes too much interference. These problems were recorded by De Forest and Alexanderson.
Short story, research to improve radio transmission. In fact, Radio has become a great medium for entertainment. The fact that today's technological developments have responded to Internet radio. In this area, satellite radio is another great development. Nowadays, any international radio station can listen easily.
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