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 196
Fig. 161.—Thomson Mirror-Reflecting Galvanometer(single coil). … 178 PRACTICAL ELECTRICITY. horizontally, by a fine cocoon silk fibre which extends the entirelength of the vertical brass tube shown in Fig, 161. To facilitate theinsertion of the magnetic system in the centre of the coil, it is w oundin two sections, which are bolted together in the cylindrical…
Electricity · Magnetism
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