Broadcasting
来自Big Physics
mid 18th century (in the sense ‘sown by scattering’): from broad + the past participle of cast1. Senses relating to radio and television date from the early 20th century.
etymonline
broadcasting (n.)
1922, verbal noun from broadcast (v.).
Broadcasting, as distinct from wireless communication, may be said to have come into being about 1920. It may be defined as the systematic diffusion, by radio telephony, of music, lectures, drama, humour, news and information bulletins, speeches and ceremonies, pictures and other matter susceptible of appreciation by a scattered audience, individually or in groups, with appropriate receiving apparatus. [Encyclopedia Britannica, 1929]
