Abstract
AS I have been recently giving attention to the subject of solar spectroscopy in consequence of my discovery of oxygen in the sun, it seemed desirable to take advantage of the total eclipse of July 29, to gain as precise an idea as possible of the nature of the corona, because the study of that envelope has been regarded as impossible at other times. The main point to ascertain was whether the corona was an incandescent gas shining by its own light, or whether it shone by reflected sunlight.
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DRAPER, H. THE ECLIPSE . Nature 18, 462–464 (1878). https://doi.org/10.1038/018462a0
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DOI: https://doi.org/10.1038/018462a0