Radios

Radios are devices that transmit and receive electromagnetic signals to communicate sounds over distances. They work by converting sound into electrical signals, which are then modulated onto radio waves—high-frequency electromagnetic waves—for transmission. At the receiver end, radio waves are captured by an antenna, demodulated to extract the audio signal, and then converted back into sound through speakers. Radios are used for broadcasting music, news, and communication in various forms, including traditional AM/FM, digital, and satellite systems, enabling wireless information sharing across vast areas without the need for physical connections.