Ewald Herring developed the "opponent-process theory" to describe perception of this characteristic.
A 1969 study by Brent Berlin and Paul Kay claimed that there were only eleven universal terms to describe this characteristic. Ewald Herring developed the "opponent-process theory" to describe perception of this characteristic. That theory differs from one developed by Thomas Young and revised by Helmholtz, which says that this characteristic is initially perceived by S, M, and L cells. Metamers cannot be distinguished on the basis of this characteristic despite having different spectra. The Ishihara test is used to identify people who have its namesake "blindness." This characteristic is described by saturation, brightness, and hue. For 10 points, name this property of light, whose perception is described by the trichromatic theory.
A 1969 study by Brent Berlin and Paul Kay claimed that there were only eleven universal terms to describe this characteristic.
color