Chromaticity

These developments paved the way for the development of new chromaticity spaces that are more suited to the estimation of correlated color temperatures and chromaticity differences.

They try to be as objective as scientifically possible, using the CIE 1976 Uniform Chromaticity Scale and a Spectroradiometer.

Abbe numbers are used to classify glass and other optical materials in terms of their chromaticity.

As noted above and seen in the accompanying photograph, the chromaticity of birefringence typically creates colored patterns when viewed in between two polarizers.

A system of subtractive color does not have a simple chromaticity gamut analogous to the RGB color triangle, but a gamut that must be described in three dimensions.

By empirical means he determined that the difference in sensation, which he termed ΔE for a "discriminatory step between colors…Empfindung" (German for sensation) was proportional to the distance of the colors on the chromaticity diagram.

Chromatic-strung harps Some harps, rather than using pedal or lever devices, achieve chromaticity by simply adding additional strings to cover the notes outside their diatonic home scale.

For different wavelength regions, or for higher precision in characterizing a system's chromaticity (such as in the design of apochromats ), the full dispersion relation (refractive index as a function of wavelength) is used.

Judd calculated the isotherms in this space before translating them back into the (x,y) chromaticity space, as depicted in the diagram at the top of the article.

No mixture of colors, however, can produce a response truly identical to that of a spectral color, although one can get close, especially for the longer wavelengths, where the CIE 1931 color space chromaticity diagram has a nearly straight edge.

The CIE 1931 x,y chromaticity space, also showing the chromaticities of black-body light sources of various temperatures ( Planckian locus ), and lines of constant correlated color temperature.