Abstract
SINCE the beginning of last December, when a very large group of sunspots crossed the sun's disk, there have been other groups of lesser magnitude but nevertheless of considerable extent, especially the group most recently visible. These groups are summarised as follows, the area being expressed in millionths of the sun's hemisphere. It may be noted that a single spot of area 500 units, when near the centre of the disk so as to escape foreshortening, is usually visible to the naked eye. Times are in U.T.
Article PDF
Rights and permissions
About this article
Cite this article
Recent Large Sunspots. Nature 137, 183–184 (1936). https://doi.org/10.1038/137183d0
Published:
Issue Date:
DOI: https://doi.org/10.1038/137183d0