Lessons in practical electricity; principles, experiments, and arithmetical problems, an elementary text-book (1903)
Swoope, Coates Walton. [from old catalog] · New York, D. Van Nostrand company · leaf 93
. 90. ■ hrough carly>n cylinder showingMn02 depolarizer. black oxide ofexciting liquidThe oxide of copper is ob-tained by the process of roasting copper turnings ; it is then 74 PRACTICAL ELECTRICITY. … Oil Line. Solution Line ground into a fine powder and compressed into solid blocks,from which plates of a suitable size are cut. These plates are suspended from the cover of the battery jar,Fig. 91, by a light framework of copper, one end of the frame-work terminating as the positive pole of the…
Electricity · Magnetism
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