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physical phenomena > process > physical process > optical process > radiation modification > radiation intensity modification > absorption > selective absorption > atmospheric extinction |
atmospheric extinction comparison table |
Subject | is a kind of | has definition |
---|---|---|
selective absorption | absorption | The process by which light from an astronomical object grows red as the light travels through interstellar dust. Dust scatters blue light more than red, thus leaving predominantly red light transmitted. |
atmospheric extinction | selective absorption | Decrease in the intensity of light from a celestial body due to absorption and scattering by the Earth's atmosphere. The extinction increases from the zenith to the horizon and affects short wavelengths more than long wavelengths, so that objects near the horizon appear redder than they are at the zenith. |