Abstract
LONDON Royal Society, March 24.—ldquo;On Ellipsoidal Current Sheets.rdquo; By Horace Lamb M.A., F.R.S.
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Fell May 10, 1879, and contained embedded nodules of nickeliferous iron surrounded by silicates.
I find by methods similar to those employed by Lord Rayleigh for the approximate determination of various acoustical constants, that the true value lies between ira/p and 2-26 a/p. For a disk of copper (p=i6oo C.G.S.), whose radius is a decimetre and thickness a millimetre, the lower limit is 0*0014 sec For disks of other dimensions the result will vary as.the radius and the thickness conjointly.
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Societies and Academies . Nature 35, 574–576 (1887). https://doi.org/10.1038/035574a0
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DOI: https://doi.org/10.1038/035574a0