Invention of radio

Radio is a way of sending messages by using invisible waves called radio waves. Radio waves are like sound waves, but they travel farther and faster. To send out radio waves, special equipment called transmitters is used. To receive radio waves and turn them back into sound, you need to use special receivers. To create a radio show or broadcast, a person speaks into a microphone so that their voice is turned into electricity. The sound is then sent through the transmitter, which turns it into radio waves, and travels out into the air. When people tune in to their radio, their receiver picks up the radio waves and turns the waves back into sound.