Abstract
MR. FRICKE showed (Phil. Mag. 41, May 1921) that in the extreme ultra-violent the arc spectrum of helium probably contained but one line with a wavelength near 585 Ä.U.
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LYMAN, T. The Spectrum of Helium in the Extreme Ultra-Violet. Nature 110, 278–279 (1922). https://doi.org/10.1038/110278c0
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DOI: https://doi.org/10.1038/110278c0


