Overview
Color measurement involves determining the reflection spectrum of a sample and applying it to a standard illuminant. The amount of light energy the sample reflects is manipulated and reduced to tristimulus values X,Y and Z. These values correspond to the physiological response of the three types of color receptors in the human eye. X, Y and Z values are combined into uniform colorspace values such as L* a* and b*. (more…)
Background
The customer supplied us with a special wheel used for chlorine content measurements. The provided sample has nine windows of varying shades of yellow, with a clear center window for reference, as shown in Figure 1. (more…)
The Ocean Optics HR2000+CG Spectrometer is a versatile, high-performance option for a range of applications. In this experiment, we conducted a feasibility study for a customer measuring reflectance of ceramic discs. (more…)
Feathers are one of the most complex epidermal structures found in vertebrates. Plumage serves a wide array of functions, from protection, insulation, tactile sensitivity, and flight to an integral part of communication, courtship and display in birds. The color of plumage is formed in two different ways – either from pigments (melanins, carotenoids, or porphyrines) or from light refracted by the complex micro and macro structures. These structures are primarily responsible for iridescent color. (more…)
