The Spectrum of the Aurora Borealis: Fro
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Helge Kragh
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Article
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2009
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University of California Press
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English
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The composition of the aurora borealis became a subject of scientific interest with the introduction of spectroscopy, but for a long time the aurora refused to reveal its secrets. After fifty years of research, the origin of the dominant green line of wavelength 5577 ร was still a mystery. Only in 1