Abstract
THE following observations on the Spectrum of the Aurora were made by Mr. Alvan Clark, jun., in the neighbourhood of Boston, on the evening of October 24. He used a chemical spectroscope of the ordinary form, with one prism, and photographed scale illuminated with a lamp. Four lines were seen at the points marked 61, 68, 80, and 98. To reduce these to wavelengths, the next day I measured the lines C, D, E, b, F, and G with the same instrument, and deduced the annexed table:—
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PICKERING, E. The Spectrum of the Aurora. Nature 3, 104–105 (1870). https://doi.org/10.1038/003104c0
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DOI: https://doi.org/10.1038/003104c0
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