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ch 28 physics


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