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  2. Reversal film - Wikipedia

    en.wikipedia.org/wiki/Reversal_film

    Black-and-white transparencies were once popular for presentation of lecture materials using 3¼"×4" (3¼" square in the UK) glass-mounted slides. Such positive black-and-white projection is now rarely done, [citation needed] except in motion pictures. Even where black-and-white positives are currently used, the process to create them ...

  3. Slide show - Wikipedia

    en.wikipedia.org/wiki/Slide_show

    A slide show in Germany. A slide show, or slideshow, is a presentation of a series of still images on a projection screen or electronic display device, typically in a prearranged sequence. The changes may be automatic and at regular intervals or they may be manually controlled by a presenter or the viewer.

  4. Liquid-crystal display - Wikipedia

    en.wikipedia.org/wiki/Liquid-crystal_display

    Since computer screen images usually have full white somewhere in the image, the backlight will usually be at full intensity, making this "feature" mostly a marketing gimmick for computer monitors, however for TV screens it drastically increases the perceived contrast ratio and dynamic range, improves the viewing angle dependency and ...

  5. Overhead projector - Wikipedia

    en.wikipedia.org/wiki/Overhead_projector

    A liquid-crystal panel mounted in a plastic frame was placed on top of the overhead projector and connected to the video output of the computer, often splitting off the normal monitor output. A cooling fan in the frame of the LCD panel would blow cooling air across the LCD to prevent overheating that would fog the image.

  6. LCD projector - Wikipedia

    en.wikipedia.org/wiki/LCD_projector

    Even so, the best image quality is found using a blank white, grey, or black [citation needed] (which blocks reflected ambient light) surface, so dedicated projection screens are often used. Perceived color in a projected image is a factor of both projection surface and projector quality. Since white is more of a neutral color, white surfaces ...

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  8. TFT LCD - Wikipedia

    en.wikipedia.org/wiki/TFT_LCD

    TFT LCDs are used in television sets, computer monitors, mobile phones, video game systems, personal digital assistants, navigation systems, projectors, [2] and dashboards in some automobiles and in medium to high end motorcycles.

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