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Chapter 28: Color Vocabulary
Color Vocabulary
10
Physics
11th Grade
07/20/2012

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Term
spectrum
Definition
For sunlight and other white light, the spread of colors seen when the light is passed through a prism or diffraction grating. In general, the spread of radiation by frequency, so that each frequency appears at a different position.
Term
white light
Definition
Light, such as sunlight, that is a combination of all the colors. under white light, white objects appear white and colored objects appear in their individual colors.
Term
pigment
Definition
A material that selectively absorbs colored light.
Term
additive primary colors
Definition
Red, blue, and green light. These colors when added together produce white light.
Term
complementary colors
Definition
Two colors of light beams that when added together appear white.
Term
subtractive primary colors
Definition
The colors of magenta, yellow, and cyan. These are the three colors most useful in color mixing by subtraction.
Term
scattering
Definition
A process in which sound or light is absorbed and reemitted in all directions.
Term
excited state
Definition
A state with greater energy than an atom's lowest state.
Term
spectroscope
Definition
An instrument used to separate the light from a hot gas or other light source into its constituent frequencies.
Term
line spectrum
Definition
A pattern of distinct lines of color, corresponding to particular wavelengths, that are seen in a spectroscope when a hot gas is viewed.
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