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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 ...
Because cartoons were shown originally in movie theatres, the film strip, if loaded incorrectly, would rub against the gate mechanism, shaving off tiny "hairs" of celluloid. These hairs would get caught in the "gate" of the projector. Sometimes it would skitter across the projection light, resulting in a gigantic hair appearing on the movie screen.
A ceiling balloon is a small, usually red, (fluted) rubber balloon commonly measuring 76 mm (3 in) across prior to inflation, inflated to ~40 cm (~15.75 in) diameter. After inflation the balloon is taken outside and released. By timing the balloon from release until it enters the cloud a ceiling height can be obtained.
People usually use nightlights for the sense of security which having a light on provides, or to relieve fear of the dark, especially in young children.Nightlights are also useful to the general public by revealing the general layout of a room without requiring a major light to be switched on, for avoiding tripping over stairs, obstacles, or pets, or to mark an emergency exit.
Designer Regan Baker relied on mood lighting and floor-to-ceiling shelving—plus nearby seating—to mimic the feel of a luxe city tasting room. Tour the Entire House Laure Joliet
The night sky in Wisconsin glows with the Northern Lights as a geomagnetic storm brings vibrant pink and green colors to a majority of the northern states. / Credit: Ross Harried/NurPhoto via ...
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