Abstract
IN corroboration of Capt. Herschel's statements regarding the mistaken idea of high dispersive power being essential to success in observations of solar prominences, I beg to give a few results obtained by a direct-vision spectroscope of dispersive power insufficient to separate D.
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PRINGLE, E. Spectroscopic Observations. Nature 7, 222 (1873). https://doi.org/10.1038/007222d0
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DOI: https://doi.org/10.1038/007222d0
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