Lessons in practical electricity; principles, experiments, and arithmetical problems; over four hundred illustrations; an elementary text book (1909)
Swoope, C. Walton (Coates Walton), d. 1901 · New York, D. Van Nostrand company · leaf 91
Fig. 87.—GondaLeclancheElements. … Fig. 88.—Elements of a Carbon Cylinder Cell.Zinc, carbon and sal-ammoniac solution. BATTERIES. 73 cell of the Standard Carbon Co., in which the carbon is madein the form of a porous cup and then filled with oxide ofmanganese to prevent polarization. Still another form of thesame make is shown in…
Electricity · Magnetism
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