Lessons in practical electricity; principles, experiments, and arithmetical problems, an elementary text-book (1902)
Swoope, Coates Walton. [from old catalog] · New York, D. Van Nostrand company · leaf 91
Fig. 87.—GoDdaLeclancheElements. … Fig. c8.—Elementh of a Carbon Cylinder Cell.Zinc,-earboii-ajad sal-aiu)moi3>ae solutj6u» 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…
Electricity · Magnetism
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