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The opaque projector, or episcope is a device which displays opaque materials by shining a bright lamp onto the object from above. The episcope must be distinguished from the diascope , which is a projector used for projecting images of transparent objects (such as films), and from the epidiascope , which is capable of projecting images of both ...
The opaque projector, or episcope is a device which displays opaque materials by shining a bright lamp onto the object from above. The episcope must be distinguished from the diascope , which is a projector used for projecting images of transparent objects (such as films or slides), and from the epidiascope , which is capable of projecting ...
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 .
A TELOP (TELevision OPtical Slide Projector) was the trademark name of a multifunction, four-channel "project-all" slide projector developed by the Gray Research & Development Company for television usage, introduced in 1949. [1] It was best remembered in the industry as an opaque slide projector for title cards.
Opaque projector; Episcopal polity, within various Christian Churches and in ecumenical dialogue; Episcope, an indirect-vision device similar to a periscope, used in ...
Evidence that light and color do not mingle in air or (other) transparent bodies is (found in) the fact that, when several candles are at various distinct locations in the same area, and when they all face an aperture that opens into a dark recess, and when there is a white wall or (other white) opaque body in the dark recess facing that ...
Square-shaped screens used for overhead projectors sometimes double as projection screens for digital projectors in meeting rooms, where space is scarce and multiple screens can seem redundant. These screens have an aspect ratio of 1:1 by definition. Most image sources are designed to project a perfectly rectangular image on a flat screen. If ...
An opaque substance transmits no light, and therefore reflects, scatters, or absorbs all of it. Other categories of visual appearance, related to the perception of regular or diffuse reflection and transmission of light, have been organized under the concept of cesia in an order system with three variables, including opacity, transparency and ...