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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:

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Recycled or remanufactured wool which is of inferior quality compared to the original wool. Historically generated from loosely woven materials. Benjamin Law invented shoddy and mungo, as such, in...
A term that applies to the number of turns and the direction that two yarns are turned during the manufacturing process. The yarn twist brings the fibers close together and makes them compact. It...
The boat-like device which carries the filling yarn wound on the bobbin which sees in the shuttle from a shuttle box on one side of the raceplate of the loom, through the shed, and into a shuttle box...
A small panel usually hung from the top of the window. It is usually folded into deep pleats at the top and cut at an angle at the bottom. It is often placed on each side of a swag as shown on the...

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