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diascope (plural diascopes)
- A projector used for projecting transparencies.
- 1982, International Broadcast Engineer: IBE. - Volumes 181-196:
- The diascope test pattern reference for automatic setup is a transparency (Figure 3), built into all TK47B lenses.
- When it is used to project a slide then at serves as a diascope.
- The diascope passes light through the two-dimensional object (such as a photographic transparency, slide, or film) and uses a converging projection lens to form an enlarged image on a distant screen.
- (medicine) A flat piece of glass or transparent plastic, used to examine lesions in the skin
- 1898, “Cutaneous Tuberculosis by Auto-infection”, in Indiana Medical Journal:
- The diascope (a flat piece of glass) was used to press out the blood and expose the apple-jelly points of marginal growth.