Page:JOSA-Vol 06-06.djvu/6

		E.	Purity.
		F.	Mode of Incidence.
	3.	Psychophysical Terms.
		A.	Psychophysical Functions.
		B.	Color Excitations and Physiological Primaries.
		C.	Visibility, Light and Luminosity.
		D.	Complementary Stimuli.
		E.	Colors of Objects.
III.	Standard Psychophysical Data				542
	1.	The Psychological Color Solid.
		A.	General Coördinates.
		B.	Reference Axes.
		C.	Boundaries.
		D.	Psychological Primaries.
	2.	The Spectral Chroma Scale.
	3.	The Saturation Scale.
	4.	Stimuli for the Psychological Primaries.
	5.	The Color Excitation Functions.
	6.	Complementary Colors and Wave-Lengths.
	7.	Standard Conditions for Pure Cone Vision.
		A.	Choice of Observers.
		B.	Size of Field.
		C.	Intensity.
IV.	Physical Standards				555
	1.	The Criterion of Homogeneous Radiant Energy.
	2.	Standards of Spectral Energy Distribution.
		A.	Average Noon Sunlight.
		B.	Standard Artificial Sunlight.
		C.	Normal Gray Light.
		D.	Standard Iluminants.
	3.	Standards of Spectral Transmission.
		A.	Standard Three-Color Additive Filters. (a) Trichromatic Analyzer Filters, (b) Photographic Taking Filters, (c) Photographic Reproducing Filters.
		B.	Standard Solutions.
		C.	Lovibond and Other Colored Glasses.
	4.	Standards of Spectral Reflection.
		A.	Subtractive Pigment Elementaries.
		B.	Systems of Pigment Standards. (a) The Munsell System, (b) The Ridgway System, (c) The Ostwald System.
V.	Methods of Colorimetry and their Interrelations				573
	1.	Resumé of Available Methods.
		A.	Spectrophotometry.
		B.	Monochromatic Analysis.
		C.	Trichromatic Analysis.
		D.	Rotatory Dispersion Systems.
		E.	Planckian Distribution Analysis.
		F.	Comparator Methods.