Abstract
I AM glad that Dr. Chree, in his letter published in NATURE of January 23, has raised a discussion of this matter, regarding which, as he says, the most contradictory statements are to be found. For some time I have been aware that the passage referred to in my book on “Magnetic Induction in Iron” requires correction. The magnetic stress, B2/8π, in a long rod or ring uniformly magnetised, is there spoken of as if it were of the same nature as a simple longitudinal stress of compression, producing a contraction of the length in consequence of the elasticity of the metal. Dr. Chree, if I understand him rightly, would treat it as of the same nature as a simple longitudinal stress of tension, producing an elongation of the iron.
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EWING, J. The Stress in Magnetised Iron. Nature 53, 316–317 (1896). https://doi.org/10.1038/053316e0
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DOI: https://doi.org/10.1038/053316e0
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