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Eye color. Eye color is a polygenic phenotypic trait determined by two factors: the pigmentation of the eye 's iris [1] [2] and the frequency-dependence of the scattering of light by the turbid medium in the stroma of the iris. [3] : 9. In humans, the pigmentation of the iris varies from light brown to black, depending on the concentration of ...
Blue-pigmented organelles, known as "cyanosomes", exist in the chromatophores of at least two fish species, the mandarin fish and the picturesque dragonet. More commonly, blueness in animals is a structural colouration ; an optical interference effect induced by organized nanometre-sized scales or fibres.
Colored gold. Ternary plot of different colors of Ag – Au – Cu alloys. Colored gold is the name given to any gold that has been treated using techniques to change its natural color. Pure gold is slightly reddish yellow in color, [1] but colored gold can come in a variety of different colors by alloying it with different elements.
Detail of a mural from an Eastern Han tomb near Luoyang, Henan showing a pair of Liubo players, containing both Han blue and Han purple pigments. Han purple and Han blue (also called Chinese purple and Chinese blue) are synthetic barium copper silicate pigments developed in China and used in ancient and imperial China from the Western Zhou period (1045–771 BC) until the end of the Han ...
Gallery. The flower of the Fuchsia plant was the original inspiration for the dye, which was later renamed magenta dye. Magenta took its name in 1860 from this aniline dye that was originally called "fuchsine", after the fuchsia flower. Magenta has been used in color printing since the late nineteenth century.
The Purple Gang, also known as the Sugar House Gang, was a criminal mob of bootleggers and hijackers composed predominantly of Jewish gangsters. They operated in Detroit, Michigan, during the 1920s of the Prohibition era and came to be Detroit's dominant criminal gang. Excessive violence and infighting caused the gang to destroy itself in the ...
The poem begins: “When I am an old woman, I shall wear purple, with a red hat which doesn't go and doesn't suit me.” Cooper wanted to encourage her friend to grow older in a playful manner. [3] Cooper repeated the gift to several other friends upon request, and eventually several of the women bought purple outfits and held a tea party on ...
Lavender is a light shade of purple or violet.It applies particularly to the color of the flower of the same name.The web color called lavender is displayed adjacent—it matches the color of the palest part of the flower; however, the more saturated color shown as floral lavender more closely matches the average color of the lavender flower as shown in the picture and is the tone of lavender ...