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  2. Mesh (scale) - Wikipedia

    en.wikipedia.org/wiki/Mesh_(scale)

    Mesh is a measurement of particle size often used in determining the particle-size distribution of a granular material.For example, a sample from a truckload of peanuts may be placed atop a mesh with 5 mm openings.

  3. Platform screen doors - Wikipedia

    en.wikipedia.org/wiki/Platform_screen_doors

    The installation of platform screen doors in Hong Kong has been effective in reducing railway injuries and service disruptions. [50] The then-longest set of platform screen doors in the world can be found in East Tsim Sha Tsui station, where it first served the East Rail line when 12-car MLR trains were still in service. [51]

  4. House dust mite - Wikipedia

    en.wikipedia.org/wiki/House_dust_mite

    Dermatophagoides pteronyssinus Dust mite faecal pellets that can be small as 10 μm, [1] but can be contained by anti-mite fabrics of a denser pore size. [2]House dust mites (HDM, or simply dust mites) are various species of acariform mites belonging to the family Pyroglyphidae that are found in association with dust in dwellings. [3]

  5. 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.

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