Abstract
Rotatioa of the Plane of Polarisation close to an Absorption Band.2 FARADAY'S rotation of the plane of polarisation is extremely small in all gases, also in sodium vapour. Only within a very narrow range close to the soctium lines the rotation is positive and very great, a fact discovered by Macaluso and Corbino.3 In a recent extremely interesting paper Prof. Wood has given measurements of observed rotation of four complete revolutions.4 This, however, was in rather dense vapour, at least dense in comparison with the vapour used in the experiments now to be described, in which vapour containing about one-millionth grain of sodium per cm.3 was used.
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References
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Recent Progress in Magneto-optics 1 . Nature 75, 160–163 (1906). https://doi.org/10.1038/075160b0
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DOI: https://doi.org/10.1038/075160b0
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