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In Saint Petersburg, Russian scientist Alexander Stepanovich Popov demonstrates to the Russian Physical and Chemical Society his invention, the Popov lightning detector—a primitive radio receiver. In some parts of the former Soviet Union the anniversary of this day is celebrated as Radio Day.

Historical image related to In Saint Petersburg, Russian scientist Alexander Stepanovich Popov demonstrates to the Russian Physical and Chemical Society his invention, the Popov lightning detector—a primitive radio receiver. In some parts of the former Soviet Union the anniversary of this day is celebrated as Radio Day. from May 7, 1895

Saint Petersburg

Federal city in Russia

Saint Petersburg, formerly known as Petrograd and later Leningrad, is the second-largest city in Russia after Moscow. It is situated on the River Neva, at the head of the Gulf of Finland on the Baltic Sea. With an area of 1,439 sq km, Saint Petersburg is the smallest…
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Aleksandr Popov (physicist)

Russian physicist (1859–1906)

Alexander Stepanovich Popov was a Russian physicist who was one of the first people to invent a radio receiving device.
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Lightning

Weather phenomenon involving electrostatic discharge

Lightning is a natural phenomenon consisting of electrostatic discharges occurring through the atmosphere between two electrically charged regions. One or both regions are within the atmosphere, with the second region sometimes occurring on the ground. Following the lightning,…
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Radio receiver

Device for receiving radio transmissions

In radio communications, a radio receiver, also known as a receiver, a wireless, or simply a radio, is an electronic device that receives radio waves and converts the information carried by them to a usable form. It is used with an antenna. The antenna intercepts radio waves and…
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Soviet Union

Country in Eurasia (1922–1991)

The Union of Soviet Socialist Republics (USSR), commonly known as the Soviet Union, was a transcontinental country that spanned much of Eurasia from 1922 until it dissolved in 1991. During its existence, it was the largest country by area, extending across eleven time zones and…
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Radio Day

National holiday in Russia on 7 May

Radio Day, Communications Workers' Day or Radio and Television Day is a commemoration of the development of radio in Russia. It takes place on 7 May, the day in 1895 on which Alexander Stepanovich Popov demonstrated a radio based lightning detector.
Source: Wikipedia (CC BY-SA)