Abstract
I EXTRACT the following from NATURE of 28th July, p. 267:— “Mr. T. W. Backhouse, of Sunderland, reports that in May there was a remarkable case of a Solar Spot making a revolution round another. It occurred with respect to the two largest spots of a group which was half way across the northern zone, on May 9th. The smaller spot was south of the larger on the 7th at 3h, but preceded it on the 12th at 21h, the line joining the two spots having rotated through an angle of 80° or 90° in 53/4days.”
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MURPHY, J. Solar Spots. Nature 2, 356 (1870). https://doi.org/10.1038/002356c0
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DOI: https://doi.org/10.1038/002356c0
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