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  2. Cesia (visual appearance) - Wikipedia

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

    This is the same kind of phenomenon that Richard S. Hunter (1969) calls "geometric attributes of appearance". [1] The advantage is that the concept of cesia encompasses all the involved aspects in a single word, and that all cesias have been organized in a three-dimensional order system according to three axes of variation, similar to color order systems or color models.

  3. Opacity - Wikipedia

    en.wikipedia.org/wiki/Opacity

    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 ...

  4. Op art - Wikipedia

    en.wikipedia.org/wiki/Op_art

    Although op art is a unique style, it has similarities with styles such as abstract expressionism (color field painting). Although color field painting does not give us illusions, similarities can still be found. We can see that both of these styles are minimalist, only a few colors prevail, and no object or plot is shown.

  5. Gouache - Wikipedia

    en.wikipedia.org/wiki/Gouache

    Gouache (/ ɡ u ˈ ɑː ʃ, ɡ w ɑː ʃ /; French:), body color, [a] or opaque watercolor is a water-medium paint consisting of natural pigment, water, a binding agent (usually gum arabic or dextrin), [1] and sometimes additional inert material. Gouache is designed to be opaque. Gouache has a long history, having been used for at least twelve ...

  6. Gothic book illustration - Wikipedia

    en.wikipedia.org/wiki/Gothic_Book_Illustration

    While Romanesque book illustration was inspired by mural painting, Gothic book illustration was primarily inspired by stained glass, which marked the Gothic cathedrals. Book illustration directly adopted the often dominant bright reds and blues in its miniatures, at least as far as representative opaque color paintings were concerned.

  7. Black-body radiation - Wikipedia

    en.wikipedia.org/wiki/Black-body_radiation

    Color of a black body from 800 K to 12200 K. This range of colors approximates the range of colors of stars of different temperatures, as seen or photographed in the night sky. Conversely, all normal matter absorbs electromagnetic radiation to some degree. An object that absorbs all radiation falling on it, at all wavelengths, is called a black ...

  8. Painting - Wikipedia

    en.wikipedia.org/wiki/Painting

    Color, made up of hue, saturation, and value, dispersed over a surface is the essence of painting, just as pitch and rhythm are the essence of music. Color is highly subjective, but has observable psychological effects, although these can differ from one culture to the next. Black is associated with mourning in the West, but in the East, white is.

  9. Camera obscura - Wikipedia

    en.wikipedia.org/wiki/Camera_obscura

    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 ...