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  2. Cesia (visual appearance) - Wikipedia

    en.wikipedia.org/wiki/Cesia_(visual_appearance)

    Five basic cesias: black, matte, specular, translucent, and transparent. Diagram of the order system for cesias. A scale of cesia: from transparent to opaque (variation of permeability), by mixing clear water and milk. A scale of cesias from specular to matte (variation of diffusivity), by progressive tarnished of a mirror.

  3. Transparency and translucency - Wikipedia

    en.wikipedia.org/wiki/Transparency_and_translucency

    Currently available infrared transparent materials typically exhibit a trade-off between optical performance, mechanical strength and price. For example, sapphire (crystalline alumina) is very strong, but it is expensive and lacks full transparency throughout the 3–5 μm mid-infrared range.

  4. Opacity - Wikipedia

    en.wikipedia.org/wiki/Opacity

    An opaque object is neither transparent (allowing all light to pass through) nor translucent (allowing some light to pass through). When light strikes an interface between two substances, in general, some may be reflected, some absorbed, some scattered, and the rest transmitted (also see refraction ).

  5. Category : Images that should have transparent backgrounds

    en.wikipedia.org/wiki/Category:Images_that...

    Media in category "Images that should have transparent backgrounds" The following 105 files are in this category, out of 105 total. 111th Battle For The Bell.jpeg 370 × 208; 33 KB

  6. Transparency (graphic) - Wikipedia

    en.wikipedia.org/wiki/Transparency_(graphic)

    This image has partial transparency (254 possible levels of transparency between fully transparent and fully opaque). It can be transparent against any background despite being anti-aliased. Some image formats, such as PNG and TIFF, also allow partial transparency through an alpha channel, which solves the edge limitation problem.

  7. Overhead projector - Wikipedia

    en.wikipedia.org/wiki/Overhead_projector

    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 images ...

  8. Photogram - Wikipedia

    en.wikipedia.org/wiki/Photogram

    A photogram is a photographic image made without a camera by placing objects directly onto the surface of a light-sensitive material such as photographic paper and then exposing it to light. The usual result is a negative shadow image that shows variations in tone that depends upon the transparency of the objects used.

  9. Glass-ceramic - Wikipedia

    en.wikipedia.org/wiki/Glass-ceramic

    In the visible range glass-ceramics can be transparent, translucent or opaque and even colored by coloring agents. However, glass-ceramic is not totally unbreakable. Because it is still a brittle material as glass and ceramics are, it can be broken - in particular it is less robust than traditional cooktops made of steel or cast iron.

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