Color The science of color is sometimes called chromatics, colorimetry, or simply color science. It includes the study of the perception of color by the human eye and brain, the origin of color in materials, color theory in art, and the physics of electromagnetic radiation in the visible range (that is, what is commonly referred to simply as "light"). Electromagnetic radiation is characterized by its wavelength (or frequency) and its intensity. When the wavelength is within the visible spectrum (the range of wavelengths humans can perceive, approximately from 390 nm to 700 nm), it is known as "visible light". Most light
Adams chromatic valence color space what Hunter used in his Lab color space. As with chromatic value, these functions are plotted with a scale factor of 2⅛ to give nearly equal radial distance for equal changes in Munsell chroma. Adams' color spaces rely on the Munsell value for lightness. Defining chromatic valence components formula_22 and formula_23, we can determine the difference between two colors as: where V is the Newhall-Nickerson-Judd value function and the 0.4 factor is incorporated to better make differences in W and W perceptually correspond to one another. In chromatic value color spaces, the chromaticity components are formula_25 and formula_26. The difference