Abstract
SINCE the publication in NATURE of the letters on these three phenomena, my attention has been directed by Prof. S. P. Thompson to the “Memoire sur les Halos,” by M. A. Bravais. The first of the above three halos, recorded by Prof. E. E. Barnard, is apparently new, unless the radius of one of the two circles was in reality considerably smaller than that of the other; if this was the case (which from the account seems scarcely likely) this halo might be part of the halo depicted on Plate iii. Fig. 98, and described on pp. 87, 88 and following, and of which Bravais says that the different parts are by no means always visible together.
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PORTER, T. The Halos of May 1, 8 and 22. Nature 66, 223 (1902). https://doi.org/10.1038/066223b0
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DOI: https://doi.org/10.1038/066223b0
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