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
atural power to prevent alimited amount of polarization by absorbingthe hydrogen gas coming from the zinc rod,so that we find it used in a variety of shapesfor open circuit cells, which gives rise to asmany different names, such as SamaonyHercules, Law, National, Standard, etc.In all these types of… … Fig. 87.—GondaLeclancheElements.
Electricity · Magnetism
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