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ch 28 physics
PHYSICS VOCAB
| Question | Answer |
|---|---|
| spectrum | 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 in radiation by frequency so that each frequency appears at a different position |
| white light | light, such as sunlight, is a combination of all the colors under white light white objects appear white and colored object appear their color. |
| pigment | a material that selectively absorbs colored light. |
| additive primary colors | red, blue, and green light. These colors when added together produce white light. |
| complementary colors | two colors of light beams that when added together make white |
| subtractive primary colors | the colors of megenta yellow and cyan. these are the three colors most useful in color mixing by subtraction |
| scattering | a process in which sound or light is absorbed and remitted in all deirection. |
| excited state | a state with greater energy than an atom's lowest state |
| spectroscope | an instrument used to separate the light from a hot gas or other light source into its constituent frequescies |
| line spectrum | a pattern of distinct light of color, corresponding to particular wavelengths that are seen in a spectroscope when a hot gas is viewed. |
Created by:
Wardlaw
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