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A PAR can is a sealed beam PAR lamp housed in a simple can-like unit. Like an old-fashioned automotive headlight, the reflector is integral to the lamp and the beam spread of the unit is not adjustable except by changing the lamp. PAR lamps are widely used in architectural lighting and may often be found at hardware stores.
And right now, this nightlight and projector is $20 off at Amazon. ... There's so much to love about this lamp. The Sky Lite 2.0 offers up a range of moving stars against nebula clouds for a ...
A balanced-arm lamp has a base, a stand or body, (in most cases) two connected arms (in many cases fitted with springs), and a lamp-head. The lamp can be moved into almost any position, and the balancing device will maintain the position until moved again. The same overall mechanism can be employed in other devices with similar requirements ...
A three-chip DLP projector uses a prism to split light from the lamp, and each primary color of light is then routed to its own DMD chip, then recombined and routed out through the lens. Three chip systems are found in higher-end home theater projectors, large venue projectors and DLP Cinema projection systems found in digital movie theaters.
The company was founded by Reuben Berkley Benjamin and filed its first patent for an electric lamp socket in 1898. The company went on to manufacture various other electrical products. One of Benjamin's most notable products was their series of non-contact fire alarm horns, introduced in the early 1920s. They were available in flush-mount ...
Simulation of a spinning zoopraxiscope An early projector and seats from a movie theater. The main precursor to the movie projector was the magic lantern.In its most common setup it had a concave mirror behind a light source to help direct as much light as possible through a painted glass picture slide and a lens, out of the lantern onto a screen.
The Starry Night, often called simply Starry Night, is an oil-on-canvas painting by the Dutch Post-Impressionist painter Vincent van Gogh, painted in June 1889.It depicts the view from the east-facing window of his asylum room at Saint-Rémy-de-Provence, just before sunrise, with the addition of an imaginary village.
A useful innovation for overhead projectors with integrated lamps/reflectors is the quick-swap dual-lamp control, allowing two lamps to be installed in the projector in movable sockets. If one lamp fails during a presentation the presenter can merely move a lever to slide the spare into position and continue with the presentation, without ...
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