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Television in Cars (TV): cfrom mixed Latin and Greek origin Customized Cincinnati Reds Jersey , meaning “far sight”: Greek tele (????), far, and Latin visio, sight (from video, vis- to see, or to view in the first person). Now it refers to a telecommunication medium for transmitting and receiving moving images that can be monochromatic (shades of grey) or multicolored. Images are usually accompanied by sound. “Television” may also refer specifically to a television set Cheap Cincinnati Reds Jersey , television programming, television transmission.
Commercially available since the late 1920s, the television set has become commonplace in homes, businesses and institutions, particularly as a source of entertainment and news. Since the 1970s the availability of video cassettes, laserdiscs Yasiel Puig Reds Jersey , DVDs and now Blu-ray Discs, have resulted in the television set frequently being used for viewing recorded as well as broadcast material. In recent years Internet television has seen the rise of television available via the Internet, e.g. iPlayer and Hulu.
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.
Broadcast TV is typically disseminated via radio transmissions on designated channels in the 54鈥?90 MHz frequency band.[1] Signals are now often transmitted with stereo andor surround sound in many countries. Until the 2000s broadcast TV programs were generally transmitted as an analogue television signal Sonny Gray Reds Jersey , but in recent years public and commercial broadcasters have been progressively introducing digital television broadcasting technology.
A standard television set comprises multiple internal electronic circuits, including those for receiving and decoding broadcast signals. A visual 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.