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In optics, chromatic aberration (CA), also called chromatic distortion, color aberration, color fringing, or purple fringing, is a failure of a lens to focus all colors to the same point. [ 1 ] [ 2 ] It is caused by dispersion : the refractive index of the lens elements varies with the wavelength of light .
The traditional color wheel model dates to the 18th century and is still used by many artists today. This model designates red, yellow and blue as primary colors with the primary–secondary complementary pairs of red–green, blue-orange, and yellow–purple.
Purple Rain is a 1984 American romantic rock musical drama film scored by and starring Prince in his acting debut. Developed to showcase his talents, it contains several concert sequences, featuring Prince and his band The Revolution .
6,6'-Dibromoindigo is an organic compound with the formula (BrC 6 H 3 C(O)CNH) 2.A deep purple solid, the compound is also known as Tyrian purple, a dye of historic significance.
Similar to porphyry, purple fabric was extremely difficult to make, as purple required the use of snails to make the dye. [16] The colour itself would have caused the public to remember how they were to behave in the presence of the real emperors wearing the real fabric, with respect bordering on worship for their self-proclaimed god-kings.
MTT, a yellow tetrazole, is reduced to purple formazan in living cells. [8] A solubilization solution (usually either dimethyl sulfoxide, an acidified ethanol solution, or a solution of the detergent sodium dodecyl sulfate in diluted hydrochloric acid) is added to dissolve the insoluble purple formazan product into a colored solution.
Microscopic image of gram-negative Pseudomonas aeruginosa bacteria (pink-red rods). Gram-negative bacteria are bacteria that, unlike gram-positive bacteria, do not retain the crystal violet stain used in the Gram staining method of bacterial differentiation. [1]
Blue–red contrast demonstrating depth perception effects 3 Layers of depths "Rivers, Valleys & Mountains". Chromostereopsis is a visual illusion whereby the impression of depth is conveyed in two-dimensional color images, usually of red–blue or red–green colors, but can also be perceived with red–grey or blue–grey images.