broadcasting

Broadcasting is the distribution of audio and / or video signals which transmit programs to an audience. The sequencing of content in a broadcast is called a schedule.
Television and radio programs are distributed through radio broadcasting of cable or through broadcast satellites.
The term “broadcast” originally referred to the sowing of seeds by scattering them over a wide field. It was adopted by early radio engineers from the Midwestern United States to refer to the analogous dissemination of radio signals. Broadcasting forms a very large segment of the mass media. Broadcasting to a very narrow range of audience is called narrowcasting.