One of the most important inventions in the history of civilization was the radio (Latin radio — transmit rays). In 1888, the German physicist Heinrich Hertz6 discovered how to receive and send electromagnetic fields with the help of different kinds of long pieces made of conductible materials (today we would simply call these pieces antennas). Electricity was sent to the antenna with a specific impulse and with a specific frequency and power to generate a field. In order to receive an electromagnetic field, it was necessary to increase the electricity that was fed into the antenna and then directed by the field chosen. However, it took several years after these first experiments until ideas came and instruments were developed that offered a certain practical perspective for these physical phenomena.
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