. Electro-physiology. Electrophysiology. 346 ELECTRO-PHYSIOLOGY CHAP. seat of electromotive energy, the first essential is to ascertain its distribution of potential. How this can be effected with the help of a homogeneous, leading-off circuit, one which in itself, and by its application to the moist conductor, develops no differences of potential on contact with the surface of the electromotive conductor, has already been stated. It remains to show how far conclusions may Vie drawn from the distribution of surface potential as to the internal electrical conditions. Starting with the cons
. Electro-physiology. Electrophysiology. 346 ELECTRO-PHYSIOLOGY CHAP. seat of electromotive energy, the first essential is to ascertain its distribution of potential. How this can be effected with the help of a homogeneous, leading-off circuit, one which in itself, and by its application to the moist conductor, develops no differences of potential on contact with the surface of the electromotive conductor, has already been stated. It remains to show how far conclusions may Vie drawn from the distribution of surface potential as to the internal electrical conditions. Starting with the consideration of a regular column of fluid, in the centre of which, at any point of its axis, an electromotive force is in action, the lines of current in the plane of any longitudinal section may be represented by the accompanying diagram (Fig. 108).. , Fm. 10S.—Diagram of current distribution in a column of fluiil. (Hosi'iithal.) If, , (A] represents a small body composed of t\vo different metals in contact, the entire column wyill be traversed by lines of current in the direction of the outgoing arrows, which collectively form a series of planes (planes of current) lying one within the other. •//•/> curves, which again form collectively a system of curved planes (planes of potential, isoelectrie /rfcm'*), cutting the planes of current at right Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Biedermann, W. (Wilhelm), 1852-1929; Welby, Frances A. (Frances Alice). London : Macmillan
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