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  2. Projection screen - Wikipedia

    en.wikipedia.org/wiki/Projection_screen

    Projection screens may be permanently installed on a wall, as in a movie theater, mounted to or placed in a ceiling using a rollable projection surface that retracts into a casing (these can be motorized or manually operated), painted on a wall, [1] or portable with tripod or floor rising models as in a conference room or other non-dedicated ...

  3. Ceiling projector - Wikipedia

    en.wikipedia.org/wiki/Ceiling_projector

    The ceiling projector or cloud searchlight is used to measure the height of the base of clouds (called the ceiling) above the ground. It is used in conjunction with an alidade, usually positioned 1000 ft (300 m) away and wherever possible set at the same level. The projector is normally set at 90°, although 71° 31' may be used, in relation to ...

  4. Projection clock - Wikipedia

    en.wikipedia.org/wiki/Projection_clock

    A projection clock (also called ceiling clock) is an analogue or digital clock equipped with a projector that creates an enlarged image of the clock face or display on any surface usable as a projection screen, most often the ceiling. [1] The clock can be placed almost anywhere if only the projected image must be seen.

  5. Mom turns ceiling into a projector screen to help ‘squiggly ...

    www.aol.com/mom-turns-ceiling-projector-screen...

    Yasmin's toddler was a bit too "squiggly" on wash day, so she came up with the perfect solution.

  6. Mom turns ceiling into a projector screen to help ... - AOL

    www.aol.com/lifestyle/mom-turns-ceiling...

    The mother placed a projector aimed at the ceiling on the counter . Her daughter was totally mesmerized by the cartoon and too distracted to make a fuss. "Genius, I have two girls who detest wash ...

  7. Projector - Wikipedia

    en.wikipedia.org/wiki/Projector

    A projector or image projector is an optical device that projects an image (or moving images) onto a surface, commonly a projection screen. Most projectors create an image by shining a light through a small transparent lens, but some newer types of projectors can project the image directly, by using lasers. A virtual retinal display, or retinal ...

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