Popov A.S. – inventor of the radio Popov A.S. – inventor of the radio Презентация создана учеником МОУ СОШ №55 г. Тулы

The teachers of Popov It is known that on the 31st of august A.S. Popov enters the Saint-Petersburg university (the physics- mathematics faculty). He is taught by Mendeleev D.I., Petrushevskiy P.P., Chebyshev and others. It is known that on the 31st of august A.S. Popov enters the Saint-Petersburg university (the physics- mathematics faculty). He is taught by Mendeleev D.I., Petrushevskiy P.P., Chebyshev and others. In 1883 he works in the torpedo officer class. In 1883 he works in the torpedo officer class. In 1889 he is the director of the electric station in Nizhniy Novgorod. But he also finds time for science work. In 1889 he is the director of the electric station in Nizhniy Novgorod. But he also finds time for science work.

The Cogerer –the Popov’s invention This device consists of he glassy tube with two electrodes. In the tube there are small metal sawdust, on which the electric discharges influence. This device consists of he glassy tube with two electrodes. In the tube there are small metal sawdust, on which the electric discharges influence. The appeared electric-magnetic wave creates the alternating current of high frequency. The appeared electric-magnetic wave creates the alternating current of high frequency. To make the reception of the without-cable connection automatic, Popov used device of bell for shaking of the cogerer after signal reception. To make the reception of the without-cable connection automatic, Popov used device of bell for shaking of the cogerer after signal reception. Then the device was upgraded and united with the first antenna for the without-cable connection. Then the device was upgraded and united with the first antenna for the without-cable connection.

The necessity of the without-cable connection Many kinds of human activity needed connection, especially sailors, that can not use cable connection. Many kinds of human activity needed connection, especially sailors, that can not use cable connection. The idea of the telegraph without cables was brought about by Popov. He convened the mechanism that made signal bring in moving the cogerer (the device for electric- magnetic signals reception). The idea of the telegraph without cables was brought about by Popov. He convened the mechanism that made signal bring in moving the cogerer (the device for electric- magnetic signals reception).

The 7 th of May – the device’s demonstration to the society The modern receiver has also the antenna, in which the coming wave makes the electric-magnetic oscillations, that are controlled by semi-passing devices. The modern receiver has also the antenna, in which the coming wave makes the electric-magnetic oscillations, that are controlled by semi-passing devices. On the 7th of May, 1895 in the Saint-Petersburg university demonstrated Popov device’s work. By transmission switching the bell in the receiver began to ring. On the 7th of May, 1895 in the Saint-Petersburg university demonstrated Popov device’s work. By transmission switching the bell in the receiver began to ring. Первый в мире радиоприемник, который А.С.Попов демонстрировал на заседании физического отделения РФХО 25 апреля (7 мая) 1895 г.

“Genrih Hertz” – the first radiogram On the 24th of March 1896 transmitted Popov he first radiogram «Genrih Gerz» (name of Popov’s teacher). On the 24th of March 1896 transmitted Popov he first radiogram «Genrih Gerz» (name of Popov’s teacher).

The saving of 50 fishermen In 1899 the ship «General Admiral Apraksin» was stopped by snowstorm in the Ices near Gogland island. In 1899 the ship «General Admiral Apraksin» was stopped by snowstorm in the Ices near Gogland island. Popov built two stations in Gogland and Kotik (47 km from each other). And Gogland began receiving signals from Kotik, these signals have saved 50 fishermen. Popov built two stations in Gogland and Kotik (47 km from each other). And Gogland began receiving signals from Kotik, these signals have saved 50 fishermen.

The conclusion On the 31st of December 1905 A.S. Popov dead. The scientist made the inestimable contribution in the development of physics. Nowadays there is plenty of things, based on Popov’s discoveries. On the 31st of December 1905 A.S. Popov dead. The scientist made the inestimable contribution in the development of physics. Nowadays there is plenty of things, based on Popov’s discoveries.