Abstract
A NUMBER of spectra of zirconium ores and oxides have been examined for persistent lines of hafnium, using the wave-lengths for this latter element given by Hansen and Werner (NATURE, 112, 618; 1923). The most persistent lines observed—three of which were found in all spectra examined—are at wave-lengths
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PETERSEN, M. Persistent Lines of Hafnium. Nature 119, 352–353 (1927). https://doi.org/10.1038/119352b0
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DOI: https://doi.org/10.1038/119352b0
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