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The cyanotype was discovered, [2] and named thus, by Sir John Herschel who in 1842 published his investigation of light on iron compounds, [3] expecting that photochemical reactions would reveal, in form visible to the human eye, the infrared extreme of the electromagnetic spectrum detected by his father William Herschel and the ultra-violet or 'actinic' rays that had been discovered in 1801 ...
To reproduce the web color cyan in inks, it is necessary to add some white ink to the printer's cyan below, so when it is reproduced in printing, it is not a primary subtractive color. It is called aqua (a name in use since 1598) because it is a color commonly associated with water , such as the appearance of the water at a tropical beach.
This form of nature printing, where ink is applied to a fish which is then pressed onto paper, was used by fishermen to record their catches, but has also become an art form of its own. The gyotaku method of printmaking uses fish, sea creatures, or similar subjects as its "printing plates". Prints are made using sumi ink and washi paper.
This is an accepted version of this page This is the latest accepted revision, reviewed on 9 January 2025. Varieties of the color cyan Cyan Color coordinates Hex triplet #00FFFF sRGB B (r, g, b) (0, 255, 255) HSV (h, s, v) (180°, 100%, 100%) CIELCh uv (L, C, h) (91, 72, 192°) Source CSS Color Module Level 3 B: Normalized to [0–255] (byte) The color cyan, a greenish-blue, has notable tints ...
Bottles of ink from Germany Writing ink and a quill. Ink is a gel, sol, or solution that contains at least one colorant, such as a dye or pigment, and is used to color a surface to produce an image, text, or design. Ink is used for drawing or writing with a pen, brush, reed pen, or quill.
Although a combination of 100% cyan, magenta, and yellow inks would, in theory, completely absorb the entire visible spectrum of light and produce a perfect black, practical inks fall short of their ideal characteristics, and the result is a dark, muddy color that is not quite black. Black ink absorbs more light and yields much better blacks.
Cyan, magenta and yellow color filters. In color printing, the usual primary colors are cyan, magenta and yellow (CMY). Cyan is the complement of red, meaning that the cyan serves as a filter that absorbs red. The amount of cyan ink applied to a white sheet of paper controls how much of the red light in white light will be reflected back from ...
The brilliant iridescent colors of the peacock's tail feathers are created by structural coloration, as first noted by Isaac Newton and Robert Hooke.. Structural coloration in animals, and a few plants, is the production of colour by microscopically structured surfaces fine enough to interfere with visible light instead of pigments, although some structural coloration occurs in combination ...