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 196
Fig. 161.—Thomson Mirror-Reflecting Galvanometer(single coil). … 178 PRACTICAL ELECTRICITY. horizontally, by a fine cocoon silk fibre which extends the entinlength of the vertical brass tnhe shewn in Fig. 161. To facilitate th«insertion of the magnetic system in the centre of the coil, it is woundin two sections, which are bolted together in the cylindrical…
Electricity · Magnetism
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