Radio

Radio is a technology that enables the transmission and reception of audio signals over distances using electromagnetic waves. It operates by modulating sound information onto a carrier wave, which can be broadcasted through the air and detected by radio receivers. The term can refer to both the medium of communication, encompassing various formats including AM (Amplitude Modulation) and FM (Frequency Modulation) broadcasting, as well as the devices used to receive these signals. Radio is a significant means of mass communication and is used for various purposes such as music broadcasting, news dissemination, talk shows, and emergency communications. It plays a vital role in cultural expression and information sharing in society.