Abstract
THE VARIATION OF SOLAR RADIATION.—With the permission of the secretary of the Smithsonian Institution, a definite and important statement under the names of Messrs. C. G. Abbot, F. E. Fowle, and L. B. Aldrich is published in the Astronomischc Nachrichten, No. 4656, with the title “The Variation of the Sun.” The observations from which the conclusions are drawn were begun in the year 1902, when preliminary experiments were made at Washington to determine the solar constant of radiation. About 700 determinations of it have now been secured, and they depend on observations made at altitudes ranging from sea-level to 4420 metres. The results, some of which are mentioned in this communication, will be published in detail in the Annals of the Astrophysical Observatory of the Smithsonian Institution (vol. iii.) now in the press, and will probably appear next month. The authors nevertheless publish in this statement some of the more important conclusions, which are as follows:—
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Our Astronomical Column . Nature 91, 381–382 (1913). https://doi.org/10.1038/091381a0
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DOI: https://doi.org/10.1038/091381a0