Brightness Scaling of White and Colored Stimuli

Science  02 Dec 1960:
Vol. 132, Issue 3440, pp. 1668-1670
DOI: 10.1126/science.132.3440.1668-a


Brightness scales for chromatic and achromatic test stimuli have been obtained by the methods of ratio production and magnitude estimation for the darkadapted observer and conditions of brief foveal stimulation. All scalesadhere to the form of a power law for brightness, and scales obtained underthe differing psychophysical procedures agree.