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  2. Projection screen - Wikipedia

    en.wikipedia.org/wiki/Projection_screen

    Square-shaped screens used for overhead projectors sometimes double as projection screens for digital projectors in meeting rooms, where space is scarce and multiple screens can seem redundant. These screens have an aspect ratio of 1:1 by definition. Most image sources are designed to project a perfectly rectangular image on a flat screen. If ...

  3. Tripod - Wikipedia

    en.wikipedia.org/wiki/Tripod

    A tripod is a portable three-legged frame or stand, used as a platform for supporting the weight and maintaining the stability of some other object. The three-legged (triangular stance) design provides good stability against gravitational loads as well as horizontal shear forces, and better leverage for resisting tipping over due to lateral forces can be achieved by spreading the legs away ...

  4. Tripod (laboratory) - Wikipedia

    en.wikipedia.org/wiki/Tripod_(laboratory)

    Laboratory Tripod. A laboratory tripod is a three-legged platform used to support flasks and beakers. Tripods are usually made of stainless steel or aluminium and made light-weight for efficient portability within the lab. Often a wire gauze is placed on top of the tripod to provide a flat

  5. FD Trinitron/WEGA - Wikipedia

    en.wikipedia.org/wiki/FD_Trinitron/WEGA

    Flat screens also increase total image viewing angle [1] and have less geometric distortion in comparison to curved screens. [2] The FD Trinitron line featured key standard improvements over prior Trinitron designs including a finer pitch aperture grille , an electron gun with a greater focal length for corner focus, and an improved deflection ...

  6. Comparison of display technology - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_display...

    Flat (limited only by brightness) TV or presentation Yes LCoS self-contained rear-projection Flat 110 [13] 279 TV: Yes LCoS front-projection Flat (limited only by brightness) TV or presentation Yes Laser self-contained rear projection Flat lenticular: 75 [14] 191 TV: Yes LED: Flat 279.92 [15] 711 Billboards, TV: Yes SED: Flat 55 [16] 140 ...

  7. Tripod head - Wikipedia

    en.wikipedia.org/wiki/Tripod_head

    A tripod head is the part of a tripod system that attaches the supported device (such as a camera) to the tripod legs, and allows the orientation of the device to be manipulated or locked down. Modular or stand-alone tripod heads can be used on a wide range of tripods, allowing the user to choose which type of head best suits their needs.

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