Home > Individual observations of the lines widened in sunspot spectra made at the Solar Physics Observatory, South Kensington, during the period November 12th, 1879, to December 31st, 1897.
Individual observations of the lines widened in sunspot spectra made at the Solar Physics Observatory, South Kensington, during the period November 12th, 1879, to December 31st, 1897.
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