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
ural power to prevent alimited auiount 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 Samson,Hercules, Law, National, Standard, etc. In all these types of… … Fig. 87.—GoDdaLeclancheElements.
Electricity · Magnetism
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