Thursday, July 22, 2010
Telivision
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. Commercially available since the late 1930s, the television set has become common in homes, businesses and institutions, particularly as a source of entertainment and news. Broadcast TV is typically disseminated via radio transmissions on designated channels in the 54–890 megahertz frequency band. Signals are now often transmitted with stereo and/or surround sound in many countries.
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