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An example of a television news ticker, at the very bottom of the screen. News ticker on a building in Sydney, Australia. A news ticker (sometimes called a crawler, crawl, slide, zipper, ticker tape, or chyron) is a horizontal or vertical (depending on a language's writing system) text-based display either in the form of a graphic that typically resides in the lower third of the screen space ...
The Indian-head test pattern is a test card that gained widespread adoption during the black-and-white television broadcasting era as an aid in the calibration of television equipment. It features a drawing of a Native American wearing a headdress surrounded by numerous graphic elements designed to test different aspects of broadcast display.
Noise (video) Noise in a CRT television (top) and flat screen television (bottom) Noise, static or snow screen captured from a VHS tape. Noise, commonly known as static, white noise, static noise, or snow, in analog video and television, is a random dot pixel pattern of static displayed when no transmission signal is obtained by the antenna ...
Avoid spraying directly onto the screen, as it may drip into the TV's components and cause damage. Do not use any abrasive or rough materials like paper towels, tissues, or regular cloth as they ...
Thermography. Thermogram of a traditional building in the background and a "passive house" in the foreground. Infrared thermography ( IRT ), thermal video and/or thermal imaging, is a process where a thermal camera captures and creates an image of an object by using infrared radiation emitted from the object in a process, which are examples of ...
All TV programming distributors in the U.S. are required to provide closed captions for Spanish-language video programming as of January 1, 2010. [10] A bill, H.R. 3101, the Twenty-First Century Communications and Video Accessibility Act of 2010, was passed by the United States House of Representatives in July 2010. [11]
Stevenson screens may also be known as a cotton region shelter, an instrument shelter, a thermometer shelter, a thermoscreen, or a thermometer screen. Its purpose is to provide a standardised environment in which to measure temperature, humidity, dewpoint, and atmospheric pressure. It is white in color to reflect direct solar radiation.
Color temperature is a parameter describing the color of a visible light source by comparing it to the color of light emitted by an idealized opaque, non-reflective body. The temperature of the ideal emitter that matches the color most closely is defined as the color temperature of the original visible light source.