Our Astronomical Column

    Abstract

    NAKED-BYE SUNSPOT.—A recent spot of considerable size is the eighth to be observed this year as a naked-eye object on the sun's disc. The growth of the spot was rapid, and it originated in a place immediately in front of the disappearing fragments of a group which was near the east limb on Aug. 9. The following table shows the rate of growth, the area being measured in the customary units of millionths of the sun's hemisphere:

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    Our Astronomical Column. Nature 120, 311 (1927). https://doi.org/10.1038/120311a0

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