Abstract
PROF. MACDONALD'S work apparently has grown out of his Adams prize essay on electric waves published more than thirty years ago and is certainly one of the most striking books on electromagnetic theory published within recent years. Its scheme is based on the laws of Ampere and Faraday together with Fresnel's law of transversality; and it leads to the result that “the electromagnetic field outside any closed” surface, due to a distribution of matter inside, is determined completely when the components of the electric and magnetic forces tangential to the surface are known, but a knowledge of the external magnetic field is not sufficient to determine the electric and magnetic current distributions inside it”. It follows that the external effect of the inside matter can be represented by electric and mag netic currents over the surface.
Electromagnetism.
By Prof. Hector Munro Macdonald. Pp. xv + 178. (London: G. Bell and Sons, Ltd., 1934.) 12s. 6d. net.
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Modern Electromagnetic Theory . Nature 134, 610–611 (1934). https://doi.org/10.1038/134610a0
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DOI: https://doi.org/10.1038/134610a0
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