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Video > Equipment
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 programming or television transmission. The word is derived from mixed Latin and Greek roots, meaning "far sight": Greek tele, 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, laserdiscs, DVDs and now Blu-ray
discs, have resulted in the television set frequently being used for viewing recorded as well as broadcast material. A standard television set comprises multiple internal electronic circuits, including those for tuning and decoding broadcast
signals. A display device which lacks a tuner is properly called a monitor, rather than a television. A television system may use different technical standards such as digital television (DTV) and high-definition television (HDTV). Television systems are
also used for surveillance, industrial process control, and guiding of weapons, in places where direct observation is difficult or dangerous.
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