color of a physical stimulus

[4.2.3] One of the ways in which the word color may be used is to designate the property of light falling on the retina that causes it to generate an impression perceived as having or lacking a quality such as, for example, whiteness, redness, or greenness. This property of light is determined by its spectral power distribution and may be specified in terms of its chromaticity and luminance. This same property of light may be imputed to a beam of light being propagated through space or originating at a distal stimulus.The distal stimulus itself may be described as colored because it gives off colored light.

« Back to Definitions Index