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Mobile screens usually use either a pull-down screen on a free stand, or pull up from a weighted base. These can be used when it is impossible or impractical to mount the screen to a wall or a ceiling. Both mobile and permanently installed pull-down screens may be of tensioned or not tensioned variety.
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 ...
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 ...
A pioneer of video installation was Korean/American Nam June Paik whose work from the mid-sixties used multiple television monitors in sculptural arrangements. [1] Paik went on to work with video walls and projectors to create large immersive environments. Wolf Vostell is another pioneer of video installation. He showed his 6 TV Dé-coll/age [2 ...
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.
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 ...