Letter | Published:

Electrochemical Periodicities

Nature volume 130, page 474 (24 September 1932) | Download Citation



DR. J. A. V. BUTLER and G. Armstrong1 and Dr. B. S. Hedges2 have published some very interesting observations on periodicities in electrolitic cells. I have made similar observations in a cell with 25 per cent sulphuric acid as electrolyte and a copper anode. The e.m.f. and resistance of the circuit being constant, under certain conditions the current through the cell assumes values from a few milliamperes to a fraction of a milliampere alternatively. The time of the alternations is variable, under different conditions, from about one to ten seconds.

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  1. 1.

    NATURE, 129, 613, April 23, 1932.

  2. 2.

    NATURE, 129, 870, June 11, 1932.

  3. 3.

    L'elettricista, Feb. 1932.

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  1. Physical Institute, University of Turin, July 31.

    • M. LIGNANA


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