periscope
From: The Columbia Encyclopedia, Sixth Edition
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Date: 2008
periscope [Gr.,=view around], instrument to enable a person to see objects not in his direct line of vision or concealed by some intervening body. Its essential parts are a tube, prisms, lenses, mirrors, and an eyepiece. The image is received in one mirror and reflected through the tube with its lenses to a mirror visible to the viewer. Periscopes used in submarines are so arranged that they can be turned to permit a view of the entire horizon, with built-in rangefinders and typically six times magnification. Submarine periscopes are of noncorrosive metal, have tubes up to 30 ft (9.1 m) long and about 6 in. (15 cm) in diameter (only a small section projects above the water), and may be withdrawn into the submarine. Many smaller types of periscopes are used in trenches and tanks. With the development of fiber optics, periscopes (known as cystoscopes or endoscopes) have become useful in medicine.
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The Columbia Encyclopedia, Sixth Edition 2008
The Columbia Encyclopedia, Sixth Edition. Copyright 2008 Columbia University Press
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... When the former chief executive of Periscope filed his wrongful termination lawsuit ... he didn't know why he was let go. Now Periscope has given Glenn Sands its answer in the ... counterclaims alleging systematic embezzlement of Periscope's funds. Richard Zabel at Akin, Gump ...
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Periscope for the prairie At a glanceA 42-foot-tall periscope arrived in Cheyenne on Sunday after a cross-country flight on a C-130 from Rhode Island's Air National Guard. The periscope is set to be placed in the Cheyenne Botanic Gardens' upcoming Children's Garden.
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... com CHEYENNE - A 42-foot-tall submarine periscope arrived at the Wyoming Air National Guard ... for the Cheyenne Botanic Gardens, the periscope idea became a reality when it landed ... would be neat for kids to look through a periscope and see what birds see from their perspective ...
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&type=1 "Wyoming Tribune-Eagle (Cheyenne, WY)")
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Periscope for the prairie.
Wyoming Tribune-Eagle (Cheyenne, WY); 6/18/2007; 587 words;
... CHEYENNE -- A 42-foot-tall submarine periscope arrived at the Wyoming Air National Guard ... for the Cheyenne Botanic Gardens, the periscope idea became a reality when it landed ... would be neat for kids to look through a periscope and see what birds see from their perspective ...
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PERISCOPE FOUNDER SUES FIRM, CHARGING WRONGFUL TERMINATION AS CEO, PRESIDENT.(Glenn Sands)(Brief Article)
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GIANT GROUP WRITES OFF STAKE IN PERISCOPE, FIRES PRESIDENT.(Brief Article)(Statistical Data Included)
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