a plot showing the percentage of light reflected from an object versus wavelengh
determines activity of the 3 cone types, different wavelength
two lights that have different wavelength distribution but are perceptually identical
a procedure in which observers are asked to match the color in one field by mixing two or more lights in another field.
a person who is completely color blind and therefore sees everything as black white, or shades of gray. can match any wavelength in the spectrum by adjusting the intensity of any other wavelength. usually only have one type of functioning receptors, usually rods
a person who has a form of color deficiency. can match any wavelength in the spectrum by mixing two other wavelengths. deuteranopes, protanopes, and tritanopes are all dichromats.