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The Spectrum of Neutral Helium

Abstract

Returning to my letter of December 6, I beg to supplement the same by a result of my last week's work, which seems to give the proposed theory a much stronger support than all probability estimates, for it represents in toto and orderly some empirical series of helium. In fact, guided by a few coherent items of my original table, I find that the whole diffuse series of singlets, denoted by 1PmD, is represented by

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SILBERSTEIN, L. The Spectrum of Neutral Helium. Nature 111, 46–47 (1923). https://doi.org/10.1038/111046b0

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