Abstract
THE electro-capillary machine of Lippmann and his capillary electrometer, besides the capillary electroscope of Werner Sieinens and the electro-chemical relay of Wheatstone are all illustrations of a phenomenon resulting from application of an electric current. I am not aware that the converse phenomenon is so generally known, namely, that the motion of the mercury in the tube produces an electric current. If we substitute a galvanometer for the battery in a Lippmann capillary machine and move the lever by hand, the galvanometer needle is deflected. Similarly, if in any of the electro-capillary electrometers a galvanometer is substituted for the battery and the bubble caused to move by mechanical action, electrical currents are produced which deflect the galvanometer needle.
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HIGGS, P. Electro-Capillary Phenomena. Nature 15, 7 (1876). https://doi.org/10.1038/015007c0
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DOI: https://doi.org/10.1038/015007c0
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