How does the radio work

In the past years, many revolutionary inventions were invented that invaded the world and were the reason for the tremendous change in our current era. One of the most important inventions that were invented and had a great impact is the invention of the radio. So what is the radio? And who is its inventor? And how does it work?

What is the radio

The radio, or what is called in fluent Arabic “the radio”, is a device through which electromagnetic waves, or so-called radio waves, are converted into a sound similar to the announcer’s voice emanating from the radio station. The radio uses a communication technology that relies on the use of electromagnetic waves that transmit and broadcast sound or other types of information.

What is radio made of?

The radio consists of an antenna that picks up radio signals, then converts them into electrical signals, and then they are transmitted to a circuit consisting of an antenna capacitor, a high-frequency amplifier, and an oscillator. converging, then this audio signal is amplified, and finally the sound reaches.

The antenna capacitor makes adjustments to the radio waves, and these modifications go through two basic modifications. The first modulation is in the modulation of pulses, which are similar to Morse signals. As for the second modification, it is the amplitude modulation, and here the modulation is by frequency modulation (FM), and in this case it is a combination of sinusoidal and informational radio waves to get the modulated wave.

Who invented the radio

Alexander Popov invented the radio in 1895 AD, by inventing a device to receive vibrations and electromagnetic waves, and he called it at first the “Thunder Recorder” and then it became called the radio after that.

The importance of radio

Radio has a great and distinctive importance that made it a very important invention, as the radio can be heard without trouble or effort, and it is the only invisible means of information, the “blind one.” reading. A person can do more than one job while listening to the radio, and hearing the radio from us only needs to focus the sense of hearing only.

Also, the radio transmits reports as soon as they happen, as the radio is a small device that is easy to carry and move from one place to another and does not take up much space, which makes many people prefer it as a means of viewing news and communication. It can also be used as an advertising media, as many inexpensive advertising offers are transmitted by radio, from which many benefit.