Part 14 (1/2)

_Aim._--To BALANCE colors by area, hue, value, and chroma. To imitate with pigments and write the balance by the notation.

_NINTH GRADE LESSONS._

1. Review balance of color pairs, by area, hue, value, and chroma.

2. To recognize, name, imitate, write, and record them.

3. SELECTION of two colors to balance a given RED.

4. YELLOW.

5. GREEN.

6. BLUE.

7. PURPLE.

8-10. TRIAD of color, selected, balanced, written, and used in design.

_Aim._--To recognize triple balance of color, and express it in terms of area, hue, value, and chroma. Also to use it in design.

GLOSSARY OF COLOR TERMS

TAKEN FROM THE

_CENTURY DICTIONARY_.

GLOSSARY

_The color definitions here employed are taken from the Century Dictionary. Special attention is called to the cross references which serve to differentiate HUE, VALUE, and CHROMA._

AFTER IMAGE.--An image perceived after withdrawing the eye from a brilliantly illuminated object. Such images are called positive when their colors are the same as that of the object, and negative when they are its complementary colors.

BLUE.--Of the color of the clear sky; of the color of the spectrum between wave lengths .505 and .415 micron, and more especially .487 and .460; or of such light mixed with white; azure, cerulean.

BLACK.--Possessing in the highest degree the property of absorbing light; reflecting and transmitting little or no light; of the color of soot or coal; of the darkest possible hue; sable. Optically, wholly dest.i.tute of color, or absolutely dark, whether from the absence or the total absorption of light. Opposed to white.

BROWN.--A dark color, inclined to red or yellow, obtained by mixing red, black, and yellow.

+CHROMA.--The degree of departure of a color sensation from that of white or gray; the intensity of distinctive hue; color intensity.+

CHROMATIC.--Relating to or of the nature of color.

COBALT BLUE.--A pure blue tending toward cyan blue and of high luminosity; also called Hungary blue, Lethner's blue, and Paris blue.

COLOR.--Objectively, that quality of a thing or appearance which is perceived by the eye alone, independently of the form of the thing; subjectively, a sensation peculiar to the organ of vision, and arising from the optic nerve.

COLOR BLINDNESS.--Incapacity for perceiving colors, independent of the capacity for distinguis.h.i.+ng light and shade. The most common form is inability to perceive red as a distinct color, red objects being confounded with gray or green; and next in frequency is the inability to perceive green.

COLOR CONSTANTS.--The numbers which measure the quant.i.ties, as well as any other system of three numbers for defining colors, are called constants of color.