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One-way mirrors for upper-level observation deck viewing down into a classroom (University of Wisconsin-Eau Claire) A one-way mirror, also called two-way mirror [1] (or one-way glass, half-silvered mirror, and semi-transparent mirror), is a reciprocal mirror that appears reflective from one side and transparent from the other. The perception of ...
The modesty panel may also provide structural support for the four legs of the desk or organ; it may also be used as a place for affixing electric cabling, computer cabling, or electrical extension boxes. A modesty panel is a partition often attached to a news desk to cover a news anchor's legs.
Therefore, the transparency is placed face up (toward the mirror and focusing lens), in contrast with a 35mm slide projector or film projector (which lack such a mirror) where the slide's image is non-reversed on the side opposite the focusing lens. A related invention for enlarging transparent images is the solar camera.
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The oldest known objects that can project images are Chinese magic mirrors. The origins of these mirrors have been traced back to the Chinese Han dynasty (206 BC – 24 AD) [4] and are also found in Japan. The mirrors were cast in bronze with a pattern embossed at the back and a mercury amalgam laid over the polished front. The pattern on the ...
Folding table of Rolls-Royce Phantom I Open Tourer Windovers (1926) A card table is a square table with legs that fold up individually, with one leg lining each edge. Card tables are traditionally used for playing card games, board games, and other tabletop games. Due to their low cost and small storage size, in the United States they are ...
The magic lantern used a concave mirror behind a light source to direct the light through a small rectangular sheet of glass—a "lantern slide" that bore the image—and onward into a lens at the front of the apparatus.
Due to population increases in many areas, portable buildings are sometimes brought in to schools to provide relief from overcrowding. Portable classroom buildings often include two classrooms separated by a partition wall and a toilet. Portable buildings can also serve as a portable car garage [3] or a storage unit for larger items. Businesses ...
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