How Radios Work

  Radios take electromagnetic waves and turn them into sound. They travel through the air like light. They broadcast using modulation and amplification. Modulation allows the manipulation of waves so that people hear different frequencies in succession which registers and different sounds to your ear. The amplification allows a broader range of sound that can be transmitted. Radios change waves into sound through the reciever and antenna. The antenna recieves the signal and sends it to the receiver which conducts it through a series of circuits and vacuum tubes. The circuits and tubes work like sophisticated  and powerful coherers (signal detectors) to convert the electromagnetic waves back into sound waves using the amplitude modulation. That's how radios work.