Color in LightColor in LightColor in LightColor in Light

IlluminationIllumination

Types of Light• Incandescent Light (white light):

“the illumination resulting from the glowing of a heated filament”

Types of Light (cont’d)• Fluorescent Light: “the

illumination produced by a tubular electric discharge lamp; the fluorescence of phosphors coating the inside of a tube”– warm white; warm color; cool white

Dimensions• Hue: “the property of a color from

which it is distinguished from other colors”

• Brilliance: “brightness; the quantity of illumination passing through a color transparency

Dimensions (cont’d)• Saturation: “a visual aspect

indicating the vividness of the hue in the degree of difference from a gray of the same lightness”

Methods of Mixing• Additive Method: “white light can

be produced by the mixture of the 3 primary hues: red, blue and green– the complement of any primary hue is

the mixture of the 2 remaining primary hues (the complements are secondary hues)

Methods of Mixing (cont’d)

• The secondary hues of the additive method are the primary hues of the subtractive method.

Methods of Mixing (cont’d)

• Subtractive Method: “involves filtering out various colors in the illumination by using different colors of transparencies”

Methods of Mixing (cont’d)

• The primary hues of the subtractive method are the secondary hues of the additive method.

Effect of Colored Light on Colored Objects

• Colored light: “illumination of an identifiable hue”

• Emphasis: “using the same color of light as the color of the object”

Effect of Colored Light (cont’d)

• Absorption: “the process of taking in, as in a colored object which absorbs certain rays of light and reflects other rays giving the object its recognizable color”

Effects of Colored Light(cont’d)

• Conversion: “the color of an object being converted or completely destroyed when one color of illumination strikes an object of a completely different color”