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epidiascope

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ep·i·di·a·scope

(ep'i-dī'ă-skōp),
A projector by which images are reflected by a mirror through a lens, or lenses, onto a screen, using reflected light for opaque objects and transmitted light for translucent or transparent ones.
Synonym(s): overhead projector
[epi- + G. dia, through, + skopeō, to view]
Farlex Partner Medical Dictionary © Farlex 2012

epidiascope

A projector used to project by reflection opaque pictures (such as the page of a book) onto a screen.
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann
References in periodicals archive
Step 3: Using an opaque projector, project the drawing so that the outside box of the original drawing lines up perfectly with the outside edges of the paper on the wall.
Many students chose photographs that needed to be enlarged Using the opaque projector, they traced these portraits onto 18 x 24" (46 x 61 cm) white paper that was taped to a wall in a darkened room.
Step 2: The photo is then translated into a line drawing using an opaque projector.
Others used an opaque projector to enlarge their flowers, then drew directly on the insulation board in pencil.
At the next class, we used an opaque projector to look at pictures of buildings from all over the world.
The seed of my discontent was planted following the eras of stone tablets and moveable type, when we went from opaque projectors, overhead transparencies, and 35mm slides to that marvel of modernity: PowerPoint, possibly the most misused presentation software of the computer age.
Before acquiring the camera, Share relied on overhead and opaque projectors, which among other things, meant sacrificing 3D and color.
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