Radio
Definition
Radio is a technology that uses radio waves for communication. It's used for broadcasting music, news, talk shows and other forms of entertainment across long distances without wires.
Analogy
Imagine radio as an invisible postman who delivers messages (music/news/talk shows) from the sender's house(radio station) directly into your home(radio receiver). You don't see him coming or going but he always delivers!
Related terms
Frequency Modulation(FM): A method of impressing data onto an alternating-current wave by varying the instantaneous frequency of the wave. This method is commonly used in radio broadcasting.
Amplitude Modulation(AM): A type of modulation where the strength or amplitude of a carrier wave varies in order to carry signal information.
Broadcasting Station: A station equipped with transmitters and antennas for broadcasting radio or television signals.
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