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Flat-screen television receivers on display for sale at a consumer electronics store in 2008

Television (TV) is a telecommunication medium for transmitting moving images and sound. Additionally, the term can refer to a physical television set rather than the medium of transmission. Television is a mass medium for advertising, entertainment, news, and sports. The medium is capable of more than "radio broadcasting," which refers to an audio signal sent to radio receivers.

Television became available in crude experimental forms in the 1920s, but only after several years of further development was the new technology marketed to consumers. After World War II, an improved form of black-and-white television broadcasting became popular in the United Kingdom and the United States, and television sets became commonplace in homes, businesses, and institutions. During the 1950s, television was the primary medium for influencing public opinion. In the mid-1960s, color broadcasting was introduced in the U.S. and most other developed countries.

In 2013, 79% of the world's households owned a television set. The replacement of earlier cathode-ray tube (CRT) screen displays with compact, energy-efficient, flat-panel alternative technologies such as LCDs (both fluorescent-backlit and LED), OLED displays, and plasma displays was a hardware revolution that began with computer monitors in the late 1990s. Most television sets sold in the 2000s were flat-panel, mainly LEDs. Major manufacturers announced the discontinuation of CRT, Digital Light Processing (DLP), plasma, and even fluorescent-backlit LCDs by the mid-2010s. LEDs are being gradually replaced by OLEDs. Also, major manufacturers have started increasingly producing smart TVs in the mid-2010s. Smart TVs with integrated Internet and Web 2.0 functions became the dominant form of television by the late 2010s. (Full article...)

In 1969, the children's television show Sesame Street premiered on the National Educational Television network (later succeeded by PBS) in the United States. Unlike earlier children's programming, the show's producers used research and over 1,000 studies and experiments to create the show and test its impact on its young viewers' learning. By the end of the program's first season, Children's Television Workshop (CTW), the organization founded to oversee Sesame Street production, had developed what came to be called "the CTW model": a system of planning, production, and evaluation that combined the expertise of researchers and early childhood educators with that of the program's writers, producers, and directors.

CTW conducted research in two ways: in-house formative research that informed and improved production, and independent summative evaluations conducted by the Educational Testing Service (ETS) during the show's first two seasons to measure the program's educational effectiveness. CTW researchers invented tools to measure young viewers' attention to the program. Based on these findings, the researchers compiled a body of data and the producers changed the show accordingly.

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Kaknästornet illuminated as a memorial to the November 2015 Paris attacks
Kaknästornet illuminated as a memorial to the November 2015 Paris attacks
Credit: Holger.Ellgaard

The Kaknäs tower (Swedish: Kaknästornet) is a TV tower in Gärdet in Stockholm, Sweden. It has 72 pillars. The tower is a major hub of Swedish television, radio and satellite broadcasts. It was finished in 1967, designed by architect Bengt Lindroos, and the height is 155 metres (509 ft) or 170 metres (560 ft) with the antenna included. The tower is owned by the national Swedish broadcasting company Teracom. The tower's name comes from the ancient name of the area, Kaknäs.

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Alistair Cooke
When television came roaring in after the war (World War II) they did a little school survey asking children which they preferred and why - television or radio. And there was this little 7-year-old boy who said he preferred radio 'because the pictures were better.'

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James Thomas Aubrey Jr. (December 14, 1918 – September 3, 1994) was an American television and film executive. As president of the CBS television network from 1959 to 1965, with his "smell for the blue-collar," he produced some of television's most enduring series on the air, including Gilligan's Island and The Beverly Hillbillies.

Under Aubrey's leadership, CBS dominated American television, leading the other networks NBC and ABC, by nine points and seeing its profits rise from $25 million in 1959 to $49 million in 1964. The New York Times Magazine in 1964 called Aubrey "a master of programming whose divinations led to successes that are breathtaking". Aubrey had replaced CBS Television president Louis G. Cowan, who was dismissed after the quiz-show scandals. Aubrey's tough decision-making earned him the nickname "Smiling Cobra" during his tenure. (Full article...)

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History of television: Early television stationsGeographical usage of televisionGolden Age of TelevisionList of experimental television stationsList of years in televisionMechanical televisionSocial aspects of televisionTelevision systems before 1940Timeline of the introduction of television in countriesTimeline of the introduction of color television in countries

Inventors and pioneers: John Logie BairdAlan BlumleinWalter BruchAlan Archibald Campbell-SwintonAllen B. DuMontPhilo Taylor FarnsworthCharles Francis JenkinsBoris GrabovskyPaul Gottlieb NipkowConstantin PerskyiBoris RosingDavid SarnoffKálmán TihanyiVladimir Zworykin

Technology: Comparison of display technologyDigital televisionLiquid crystal display televisionLarge-screen television technologyTechnology of television

Terms: Broadcast television systemsComposite monitorHDTVLiquid crystal display televisionPALPicture-in-picturePay-per-viewPlasma displayNICAMNTSCSECAM

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