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 337
318 PRACTICAL ELECTRICITY. … Fig. 287.—Detail of CondenserConstruction. minates in a piece of platinum wire &nd there is also a piecaof sheet platinum fastened to the vibrator arm at the point ofcontact with the screw C. Platinum is used to prevent theoxidation due to the spark at the contact points. The instantthe current…
Electricity · Magnetism
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