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In a Word the Basics Early Television Analog Broadcasting Light And LEARN SOMETHING NEW EACH WEEK ON OUR WORLD OF WONDER PAGES! Exploring the realms of history, science, nature and technology 1960 Philco Continental TELEVISIONAlmost everybody has one, and most of us watch too much of it. But few of us know how a television works or how new technologies will change the television. The TV has transformed entertainment and education around the world. 1939 RCA TRK9 Size matters In a word The first TV screens were no bigger than a business card. The demand for larger The word television entered the TV screens seems insatiable. Early large-screen TVs were heavy and clunky when English language in 1907. It is compared with today’s screens, which are becoming ever larger. Recently, the first derived from the Greek word tèle, foldable TV was unveiled; it has a whopping 165-inch screen that disappears into meaning “far,” and the Latin word the floor. The downside is a $400,000 price tag. visio, which means “sight.” It is based on the idea that televisions Light and color received moving pictures over The first television pictures were in distances using telegraph lines. black and white. In the 1960s and The abbreviation TV was intro- ’70s, color TV transmissions and duced in 1948. TV sets were developed. The basics Blue To understand how early televi- light sions worked, think of it as three parts that work together. A TV Red 1980 Zenith camera would turn a picture and Green light big-screen console sound into a signal, a TV trans- 2018 LED light mitter would send the signal TV screen sizes are measured diagonally, large-screen display through the air, and the TV re- from corner to corner. ceiver would capture the signal Pixels and turn it back into pictures and Television technology today Images sound. Over the past 20 years, TVs have become not only you see bigger, but lighter, thinner and smarter. A smart TV on your Sunlight and electric light are Early television connects to the internet, allowing users to stream television are made up white light. There are three pri- music and videos, browse websites and view The first generation of televisions of pixels (picture ele- mary colors of light — red, green photos. used a spinning disc and a neon ments). Each pixel has and blue. The combination of lamp to produce a blurry, orange- Some examples of more recent TV technology three dots that glow these three primary colors creates tinted picture about the size of a and how they work: red, green and blue. white light. business card. These televisions, Liquid Crystal Display (LCD) TVs were first con- Generally, the more built between 1926 and 1935, are ceived in the 1960s. LCD technology uses a unique pixels a screen has, the Going Digital called mechanical televisions. state of matter called liquid crystals. Once very higher its resolution. The transition from analog to Meanwhile, other people were popular, this kind of TV is getting harder to find. The resolution of a flat digital broadcasting began experimenting with electronic LED TVs are illuminated by light-emitting diodes. TV can be defined as around 2000. Digital technology televisions using cathode-ray This TV technology has been around since 2007 the physical size of the can produce TV programming with tubes (CRT). The tubes pro- and allows the TVs to be thinner. screen, measured by movie-quality picture and CD- jected electrons onto the screen, quality sound. Digital technology Organic light-emitting diode (OLED) TVs have an the number of pixels. creating a much higher-quality can also transmit large amounts organic fluorescent compound(small molecules image than the one achieved by of other data into the home, which or polymers) that emit light. They first hit the market mechanical televisions. In the may be accessible by using your in 2012. OLED TVs have better color quality, but early 1940s, most TV stations Did you know? computer, tablet, cellphone or TV. over time this can degrade. Almost as flat as wall- converted from mechanical sys- It is estimated that average paper, OLED TV technology is evolving quickly. High-definition television (HDTV) tems to the electronic television U.S. households get a new is a type of digital service. HDTV Quantum light-emitting diode (QLED) TVs have broadcasting system. TV every 6.9 years. provides high-resolution program- only been around for a few years. Tiny nanopar- On average, people spend ming in a wide-screen format. ticles called quantum dots provide improved color Analog broadcasting two to five hours a day and brightness. QLED screens can be larger, last Early television broadcasting watching television. longer, and are more affordable than OLED TVs. Top TV shows in evolved from existing radio sta- The first TV remote con- the United States tions. Early stations began broad- “Howdy Doody” was trol was created in 1950 by casting both audio and video with a popular TV show that Zenith and was connected Based on Nielsen Media analog signals. ran from 1947 until to the television by a wire. Research, 29 of the 30 most- Analog transmissions took up a 1960. Howdy Doody In 1955, watched broadcasts are Super lot of channel space, or band- was a wooden puppet. Zenith’s Bowls. Super Bowl XLIX, with width. Initially, radio relay towers Each episode opened Flashmatic 114.4 million viewers, is No. 1. were used to handle the load. with the question, "Say, became the first The most-watched In the 1930s, telephone cables kids, what time is it?" wireless remote non-Super Bowl broadcasts: were found to work well for long- control. “M*A*S*H” (series finale) 1983 (106 million viewers) distance television transmissions. The video cassette recorder (VCR) was “Dallas” (“Who shot J.R.?” episode) By the 1950s, a cross-country 1980 (83.6 million) microwave radio relay network launched in 1963 in the “Cheers” (series finale) was designed. This system was U.K. It allowed viewers to 1993 (80.5 million) record their favorite TV replaced by satellites in the late Winter Olympics (ladies’ singles 20th century. shows for the first time. figure skating) Analog television could be wire- Until 1987, Iceland did not 1994 (78.8 million) less (terrestrial television and 1971 receive any TV broadcasts “The Day After” (television film) 1983 (76.7 million) satellite television) or distributed Panasonic on Thursdays. over a cable network. Flying Saucer SOURCES: World Book Encyclopedia, World Book Inc.; Vhttps://www.explainthatstuff.com; https://www.homestratosphere.com; www.tvhistory.tv; https://www.techradar.com © 2021 Triefeldt Studios, Inc. Distributed by Andrews McMeel Syndication LEARN ABOUT IRISES IN THE NEXT INSTALLMENT OF WORLD OF WONDER OUR WEEKLY NEWSPAPERS IN EDUCATION PAGE CAN BE A FUN LEARNING TOOL FOR YOUR KIDS. CHECK BACK EACH THURSDAY FOR A NEW, EXCITING TOPIC! Serving Pinal County For More Than A Century TO SUBSCRIBE: Newspapers (520) 423-8685 in Education CGVNI-NIE World Of Wonder 4-1-21 Television DISP 4/1 (0) Zoe 6x21.5 FULL COLOR • Whole ad is art ol.
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