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What is "Metamerism" - Definition & Explanation

Variations in color perceived under different light, surrounding colors, or by the observer's sense of color. http://en.wikipedia.org/wiki/Metamerism_(color)
A marked change in the colour of an object with a change in the spectral composition of the light by which it is viewed.
NOTE:
Metamerism can be judged only with reference to the changes occurring in other objects in the fields of view as the illumination is changed.
A metamerism occurs when the color standard and the submit do not match under all lighting conditions. This means that a solid color fabric when viewed under two different lights in a commercial light box, will appear to cast two different colors. The correct technical definition for metamerism is a conditional match that is, two or more samples match for one observer under one light source, but not under a different light source for that same observer.

Some other terms

Some more terms:

A process of opening and cleaning textile fibers-usually cotton which separates fibers from each other, lays them parallel, forms them into a thin web, and then condenses them into a single...
A band (q.v.) that runs with clearly defined edges and that differs in appearance from the adjacent normal fabric. (It may be shady and may or may not run parallel with the picks). Bar is a general...
A waxy or oiled-finished leather These leathers lighten when stretched, bent, or "pulled up". They are categorized as natural because they do not have a thick top coat. They have a nice hand, and...
The yarns that result after undegoing the texturizing process, which can create crimping, looping, and otherwise modify the filament yarn for the purpose of increasing cover, abrasion resistance,...
A zoot suit is a man's suit with wide-legged, tight-cuffed, or "pegged," trousers; a long coat with wide lapels, and wide, padded shoulders. It was described by one young fan at the time as "a...

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