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  2. Optical comparator - Wikipedia

    en.wikipedia.org/wiki/Optical_comparator

    The projector magnifies the profile of the specimen, and displays this on the built-in projection screen. [4] On this screen there is typically a grid that can be rotated 360 degrees so the X-Y axis of the screen can be aligned with a straight edge of the machined part to examine or measure. This projection screen displays the profile of the ...

  3. List of motion picture film formats - Wikipedia

    en.wikipedia.org/wiki/List_of_motion_picture...

    Projection dimensions are the width and height of the projector aperture plate, and by extension the film frame area which is projected. The aperture plate always very slightly crops the frame. Projection lenses indicates whether spherical (normal) or anamorphic lenses are used on the projector, and if anamorphic lenses, what anamorphic power ...

  4. Projection screen - Wikipedia

    en.wikipedia.org/wiki/Projection_screen

    A grey screen may thus succeed almost as well in delivering a bright-looking image, or fail to do so in other circumstances. Compared to a white screen, a grey screen reflects less light to the room and less light from the room, making it increasingly effective in dealing with the light originating from the projector. Ambient light originating ...

  5. Template:Comparison of graphical projections.svg - Wikipedia

    en.wikipedia.org/wiki/Template:Comparison_of...

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  6. 21:9 aspect ratio - Wikipedia

    en.wikipedia.org/wiki/21:9_aspect_ratio

    The main benefit of this screen aspect ratio is a constant display height when displaying other content with a lesser aspect ratio. The 64:27 aspect ratio of "21:9" is an extension of the existing video aspect ratios 4:3 (SDTV) and 16:9 (HDTV), as it is the third power of 4:3, where 16:9 of traditional HDTV is 4:3 squared.

  7. List of CRT video projectors - Wikipedia

    en.wikipedia.org/wiki/List_of_CRT_video_projectors

    50 inch fixed screen projector with two projector lenses with three tubes. 60 fL on screen brightness. KP-7200 [36] Sony: 1978: No : 480i : 50 [37] Analogue: 72 inch fixed screen projector with two projector lenses with crt three tubes. 30 fL on screen brightness. KP-5010 : Sony: 1979: No : 480i : Analogue: 50 inch screen projector: KP-7210 ...

  8. Cinerama - Wikipedia

    en.wikipedia.org/wiki/Cinerama

    Original Cinerama screen in the Bellevue Cinerama, Amsterdam (1965–2005) 17-meter curved screen removed in 1978 for 15-meter normal screen. [1]Cinerama is a widescreen process that originally projected images simultaneously from three synchronized 35mm projectors onto a huge, deeply curved screen, subtending 146-degrees of arc.

  9. Display size - Wikipedia

    en.wikipedia.org/wiki/Display_size

    The size of a screen is usually described by the length of its diagonal, which is the distance between opposite corners, typically measured in inches. It is also sometimes called the physical image size to distinguish it from the "logical image size," which describes a screen's display resolution and is measured in pixels. [1] [2]