Wave-length measurements in the arc spec
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C.C. Kiess
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Article
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1922
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Elsevier Science
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English
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THE arc spectra of neodymium and samarium were photographed with a large concave grating spectrograph, the photographic plates being suitably sensitized to record the spectra from the green to the infra-red. About 1500 lines were measured in each spectrum, most of them being of low intensity. No b