Societies and Academies

    Abstract

    LONDON. Royal Society, December 3.—Sir William Crookes, president, in the chair.—M. de Lange: The thermophone—a new form of telephone.—Dr. G. S. Walpole: Hermann's phenomenon. At the boundary between two solutions of unequal specific conductivity a change reaction is developed if a difference of potential be maintained between them. Alkali is liberated if the current passes from the better conducting solution to that not conducting so well; acid, if the current passes in the opposite direction. The amounts may be calculated from the potential gradients in the solutions on each side of the boundary, the time for which the difference of potential is maintained, the resistance constant of the vessel employed, the dissociation constant of water, and the known migration velocities of hydrogen and hydroxyl ions.

    Rights and permissions

    Reprints and Permissions

    About this article

    Cite this article

    Societies and Academies . Nature 94, 412–413 (1914). https://doi.org/10.1038/094412a0

    Download citation

    Comments

    By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.