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2. Optimum HDTV viewing distance - Wikipedia

   en.wikipedia.org/wiki/Optimum_HDTV_viewing_distance

   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).

3. List of Sony Bravia televisions - Wikipedia

   en.wikipedia.org/wiki/List_of_Sony_Bravia...

   55" 1080p: WCG-CCFL 32EX720 32" 1080p: Edge LED 40EX720 40" 1080p: Edge LED 46EX720 46" 1080p: Edge LED 52EX720 52" 1080p: Edge LED 55EX720 55" 1080p: Edge LED 4 [37] 60EX720 60" 1080p: Edge LED 46HX729 46" 1080p: Edge LED 55HX729 55" 1080p: Edge LED 65HX729 65" 1080p: Edge LED 46NX720 46" 1080p: Edge LED 55NX720 55" 1080p: Edge LED 60NX720 60 ...

4. Mechanical television - Wikipedia

   en.wikipedia.org/wiki/Mechanical_television

   The 'Scophony' television receiver of 1938, an advanced television receiver that used a mechanical display, was capable of displaying a 405-line picture (compatible with the then 405-line television system used in the United Kingdom) on a display that was 24-inch (60 cm) wide and 20-inch (50 cm) high. A version intended for theater audiences ...

5. Predicta - Wikipedia

   en.wikipedia.org/wiki/Predicta

   Philco Predicta from the collection of The Children's Museum of Indianapolis Predicta model 4654 with “barber pole” stand from the collection of the Museum of the Moving Image, New York The Philco Predicta is a black and white television chassis style, which was made in several cabinet models with 17” or 21” screens by the American ...

6. Guy-wire - Wikipedia

   en.wikipedia.org/wiki/Guy-wire

   Thus, the bottom length of the guy is vertical and does not obstruct headroom, so a sidewalk can pass between the pole and the guy. An alternative to guy-wires sometimes used on dead-end utility poles is a push-brace pole , a diagonal pole with one end set in the ground and the other butting up against the vertica pole, opposite to where a guy ...

7. List of IEC standards - Wikipedia

   en.wikipedia.org/wiki/List_of_IEC_standards

   Guide to the measurement of the static thrust applied to brushes IEC 61016 Helical-scan digital component video cassette recording system using 19 mm magnetic tape (format D-1) IEC 61017 Radiation protection instrumentation – Transportable, mobile or installed equipment to measure photon radiation for environmental monitoring