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On Determining the Depth of the Sea Without the Use of the Sounding Line1

Nature volume 13, pages 431432 | Download Citation



THIS is the title of a paper which has been presented to the Royal Society, and Mr. Siemens gave at the meeting of the 24th ult., a description of the instrument which he has designed with this object. He commenced by giving a mathematical statement of the effect of local attraction, to a certain depth, on a body placed at the surface of the earth, assuming it to be of uniform density, spherical in form, and unaffected by centrifugal action. For small values of depth (h), this attraction is 2πh, the original formula from which this is adduced is:—

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