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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.
Vitascope was an early film projector first demonstrated in 1895 by Charles Francis Jenkins and Thomas Armat. They had made modifications to Jenkins' patented Phantoscope, which cast images via film and electric light onto a wall or screen. The Vitascope is a large electrically-powered projector that uses light to cast images.
The best thing about these projectors is that many of them give the magical effect of outdoor Christmas lights, without any of the hassle of untangling them, hanging them up or even taking them down.
Opaque projectors are not as common as the overhead projector. Opaque projectors are typically used to project images of book pages, drawings, mineral specimens, leaves, etc. They have been produced and marketed as artists' enlargement tools to allow images to be transferred to surfaces such as prepared canvas, or for lectures and discourses.
A projector or image projector is an optical device that projects an image (or moving images) onto a surface, commonly a projection screen. Most projectors create an image by shining a light through a small transparent lens, but some newer types of projectors can project the image directly, by using lasers.
Tiger Electronics has been part of the Hasbro toy company since 1998. [8] [9] Hasbro paid approximately $335 million for the acquisition. [10]In 2000, Tiger was licensed to provide a variety of electronics with the Yahoo! brand name, including digital cameras, webcams, and a "Hits Downloader" that made music from the Internet (mp3s, etc.) accessible through Tiger's assorted "HitClips" players ...