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Braun HF 1, Germany, 1958

Television ( TV ) is a widely used [telecommunication] [medium] for transmitting and receiving moving [images] , either [monochromatic] ("black and white") or [color] , usually accompanied by [sound] . "Television" may also refer specifically to a [television set] , [television program] ming or [television transmission] . The word is derived from mixed [Latin] and [Greek] roots, meaning "far sight": Greek tele ,, far, and Latin visio , sight (from video, vis- to see, or to view in the first person).

[Commercially available since the late 1930s] , the television set has become a common communications receiver in homes, businesses and institutions, particularly as a source of [entertainment] and news. Since the 1970s the availability of [video cassettes] , [laserdisc] s, [DVDs] and now [Blu-ray Disc] s, have resulted in the television set frequently being used for viewing recorded as well as broadcast material.

Although other forms such as [closed-circuit television] (CCTV) are in use, the most common usage of the medium is for [broadcast television] , which was modeled on the existing [radio broadcasting] systems developed in the 1920s, and uses high-powered [radio-frequency] transmitters to [broadcast] the television signal to individual TV receivers.

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