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Absorption linesDark lines interrupting a continuous color spectrum, caused by a cool gas between the light source and the observer. Cool gas absorbs light in the same frequencies as it emits when hot, e.g. double ye [..]
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Absorption linesThe dark line's in the solar spectrum due to absorption by the solar and the earth's atmosphere; the phenomenon occurs because rays passing from an incandescent body through a colder medium are absorbed by elements in that medium. (05 Mar 2000)
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Absorption linesare a dark feature in the spectrum of a star formed by cooler gases in a star’s outer layer.
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