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Search Knowledge Base Knowledge Base - Glossary of Terms
Glossary is usually defined as an alphabetical list of technical terms in some specialized field of knowledge. This knowledge base glossary provides a collection of knowledge base documents that define many technical terms. These terms are arranged alphabetically, but you can quickly jump to a specific term by selecting its first letter from the index of the knowledge base glossary below.
 
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178 Glossary Terms Found Displaying record 151 to 165 out of 178 search results
Scattering coefficient (S)
The optical property that describes the scattering of light by a colorant or mixture of colorants. An optical constant that quantifies the ability of a colorant to scatter light. Based on reflectance data for a sample, it is one of the values calculated during colorant set calibration, using the Kubelka-Munk equation. It is part of the data used to calculate color matches and corrections.

Scattering resin
A resin that is not completely transparent. The resin can contain particles that absorb light, scatter light, or both. The result is that the background is obscured. This causes the material to appear cloudy, or translucent.

Single constant / one constant
A resin that is not completely transparent. The resin can contain particles that absorb light, scatter light, or both. The result is that the background is obscured. This causes the material to appear cloudy, or translucent.

SmartMatch point
Information about a specific laboratory or production dyeing stored in the database. This information is used to improve first-time matching and correction.

SmartMatch population
A group of SmartMatch points which were all dyed on the same substrate using the same dyes.

Smoothed data
The reflectance data is manipulated in such a way that minor variations in the build-up of a dyestuff are eliminated by a least mean squared fit.

Solvent
Another term for thinner. It is a component ingredient, usually a solvent or diluent, added to a formula for viscosity adjustment.

Specular
The smooth, mirror-like reflection coming from a sample. When the light travels through air and encounters the sample, some of the light is reflected at the sample surface and never penetrates the sample. We refer to this portion of the reflected light as the specular component. For the calculation of optical constants, matching and correction predictions, all spectral measurements must be corrected to account for the loss of energy due to this specular effect.

Specular Component Excluded-SCE
A type of measurement geometry. Measurement of reflectance made in such a way that the regular surface reflection is not part of the measurement. This can be accomplished through the following techniques: • Using 0°(perpendicular) incident light on the samples, thereby reflecting the specular component of the reflectance back into the instrument. • Using black absorbers or light traps at the specular angle when the incident angle is not perpendicular. • Measuring at an angle different from the specular angle in directional measurements. • For a sphere instrument, opening a hole in the sphere opposite the measuring optics.

Specular Component Included-SCI
A type of measurement geometry. Measurement of reflectance made in such a way that the regular surface reflection is included in the measurement.

Specular reflectance
Light striking a surface and being reflected, or turned back, at an angle equal to the angle of incidence. The reflected light is specular reflectance.

Standard
Measured color to be matched (target color). In Datacolor textile matching software, a standard becomes a color type.

Standard observer
A numeric description of the way the human eye responds to color. The spectral response characteristics of the average observer are officially defined by the CIE. Two such sets of data are defined, the 1931 data for the 2° visual field (distance viewing) and the 1964 data for the annular 10° visual field (approximately arm’s length viewing. NOTE: All of the expressions of colorimetric data (screen displays and hard copy) explicitly state the illuminant / observer condition used to determine the values.

Stock solution
Definition of different dilutions used for optimizing the accuracy of manual dyestuff pipetting and to prevent that the maximum of the dye solution is not to be exceeded.

Strength
The relative ability of a unit quantity of colorant to alter the color of another colorant to which it is added. In popular usage, tinting strength is an index of the effectiveness with which a chromatic colorant imparts color to a standard white pigment. In a mixture of pigments, the absorption strength or the scattering strength, or both, may affect its apparent strength. In any case, tinting strength comparisons of materials of different chemical type may vary with the concentrations of colorants used, so care must be exercised in selecting relative concentrations or concentration ranges. -OR- Relative change in the absorption of a standard white pigment when a specified amount of absorbing pigment, black or chromatic, is added. This is basically the common definition of tinting strength.

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