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Find the optimal distance for a given screen. Example: for a 4K UHD screen 140 cm high (112 inches diagonal), the optimal distance is 140 × 1.6 = 224 cm. Find the right screen size. Example: for a 1080 HDTV used at a distance of 250 cm, you need to find a screen whose height is close to 250 / 3.2 = 78 cm (63 inches diagonally).
A generic LCD TV, with speakers on either side of the screen Liquid-crystal-display televisions (LCD TV) are television sets that use liquid-crystal displays to produce images. LCD televisions are much thinner and lighter than CRTs of similar display size and are available in much larger sizes (e.g., 90-inch or 230-centimetre diagonal).
As a result of these size limitations, rear projection systems became popular [8] [9] as a way of producing television sets with a screen size larger than 12 inches. [10] Using a 3 or 4 inch monochrome CRT driven at a very high accelerating voltage for the size (usually 25,000 volts [ 11 ] though RCA did produce a larger five inch tube that ...
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