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Absorption spectraPlural of Absorption Spectrum
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Absorption spectraAlso called dark line spectra, these arise when photons of specific frequency are absorbed by cooler gas, leaving a darker line on a background continuum region. Most stellar spectra, including that from our Sun, are absorption spectra.
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Absorption spectraA distinctive pattern of dark absorption lines and broad absorption bands observed when light reflected from, or transmitted through, a gemstone is viewed through a spectroscope.
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