pigment wikipedia - EAS
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A pigment is a colored material that is completely or nearly insoluble in water. In contrast, dyes are typically soluble, at least at some stage in their use. Generally dyes are often organic compounds whereas pigments are often inorganic compounds. Pigments of prehistoric and historic value include ochre, … See more
Like all materials, the color of pigments arises because they absorb only certain wavelengths of visible light. The bonding properties of the material determine the wavelength and efficiency of light absorption. Light of other wavelengths are reflected or … See more
Before the development of synthetic pigments, and the refinement of techniques for extracting mineral pigments, batches … See more
The following are some of the attributes of pigments that determine their suitability for particular manufacturing processes and applications:
• Lightfastness … See moreIn biology, a pigment is any colored material of plant or animal cells. Many biological structures, such as skin, eyes, fur, and hair contain pigments (such as melanin). Animal skin coloration often comes about through specialized cells called chromatophores, which animals such … See more
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