__________________ appear to match in one set of lighting conditions, but not in another.
Dyes
Pigments
Metameric colors
Simultaneous contrast colors
Fluorescent fibers
The answer is metameric colors. Metameric colors are colors that appear to match under certain lighting conditions but not in others. This phenomenon occurs due to the way our eyes perceive color.
To understand how to get the answer, you can use the process of elimination. First, let's go through the options:
1. Dyes: Dyes are substances that are used to color materials, such as fabric or yarn. Dyes themselves do not change in appearance based on lighting conditions, so this option can be eliminated.
2. Pigments: Pigments are similar to dyes, but they have a different composition and are often used in different applications, such as paints or inks. Like dyes, pigments do not exhibit the metamerism phenomenon.
3. Metameric colors: This option is the answer we are looking for. Metameric colors are colors that appear to match in one set of lighting conditions but not in another. This phenomenon occurs due to differences in the spectral composition of the light sources.
4. Simultaneous contrast colors: Simultaneous contrast colors refer to the way our eyes perceive color based on the surrounding colors. This phenomenon can influence our perception of a color, but it doesn't specifically relate to the metamerism phenomenon.
5. Fluorescent fibers: Fluorescent fibers are materials that emit fluorescent light when exposed to certain wavelengths of light. While they can exhibit color changes under different lighting conditions, they are not directly related to the metamerism phenomenon.
By a process of elimination, we can conclude that the correct answer is metameric colors.