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  2. Screen-door effect - Wikipedia

    en.wikipedia.org/wiki/Screen-door_effect

    The screen-door effect (SDE) is a visual artifact of displays, where the fine lines separating pixels (or subpixels) become visible in the displayed image. This can be seen in digital projector images and regular displays under magnification or at close range, but the increases in display resolutions have made this much less significant.

  3. 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).

  4. Pella (company) - Wikipedia

    en.wikipedia.org/wiki/Pella_(company)

    The company was founded in 1925 when Peter Kuyper and his wife Lucille invested $5,000 to buy the Rolscreen Company, a small business that had created the Rolscreen insect window screen that rolls out of sight when not in use. [2] In 1926 they moved the company to Pella, Iowa, where the Kuyper family had a lumber business.

  5. 3D display - Wikipedia

    en.wikipedia.org/wiki/3D_display

    A person wearing a virtual reality headset, a type of near-eye 3D display. A 3D display is a display device capable of conveying depth to the viewer. Many 3D displays are stereoscopic displays, which produce a basic 3D effect by means of stereopsis, but can cause eye strain and visual fatigue.

  6. Platform screen doors - Wikipedia

    en.wikipedia.org/wiki/Platform_screen_doors

    Platform screen doors at the Fuda Station, Tokyo, Japan, 2023. Platform screen doors (PSDs), also known as platform edge doors (PEDs), are used at some train, rapid transit and people mover stations to separate the platform from train tracks, as well as on some bus rapid transit, tram and light rail systems.

  7. Ultrawide formats - Wikipedia

    en.wikipedia.org/wiki/Ultrawide_formats

    Comparison of common display resolutions. Ultrawide formats refers to photos, videos, [1] and displays [2] with aspect ratios greater than 2. There were multiple moves in history towards wider formats, including one by Disney, [3] with some of them being more successful than others.

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