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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 ...
A darker (grey) screen reflects less light, of course—both light from the projector and ambient light. This decreases the luminance (brightness) of both the projected image and ambient light, so while the light areas of the projected image are dimmer, the dark areas are darker; white is less bright, but intended black is closer to actual black.
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.
But, perhaps even more fun than the elaborate lights is the projector that Drew has set up to play the classic 1964 claymation version of Rudolph the Red-Nosed Reindeer on the front of the house.
Christmas Snowfall Projector Lights. If you're looking for a more subtle snowfall effect, try this popular projector. It's a great alternative to traditional string likes and it'll make it look ...
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