Abstract
THE first quantitative measurements of the abundances of the elements in the planetary nebulae are derived by Mr. T. L. Page from the intensities of ‘forbidden’ lines in the spectra of these objects. An explanation is sought for the surprisingly high abundance of neon and argon relative to oxygen, as compared with their proportions in the composition of the earth.
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Points from Foregoing Letters. Nature 138, 511 (1936). https://doi.org/10.1038/138511a0
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DOI: https://doi.org/10.1038/138511a0