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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 209

An illustration from Lessons in practical electricity; principles, experiments, and arithmetical problems, an elementary text-book, 1903, leaf 209 — Fig. 180.—Direction of CurrentAround Horseshoe Magnet. … *• Fromenfs Equalizer, with Stanhope Lever. 2. Stump- Magnet. 4. Iron Clad Magnet

Electricity · Magnetism

Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.

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