Lessons in practical electricity; principles, experiments, and arithmetical problems, an elementary text-book . Fig. 8.—Magnetising a Fig. 8.—Magnetisation by Divided Stroke. 8 PRACTICAL ELECTRICITY. to be magnetised, and a strong current of electricity passedthrough the coil from a battery or dynamo, as in Fig. 10, thesteel will be permanently magnetised with a N and S-pole,after the current is turned off. Tapping the end of the steelwith a hammer, while it is under the influence of the current,will produce better results. Instead of winding the wirearound the bar, the bar c
Lessons in practical electricity; principles, experiments, and arithmetical problems, an elementary text-book . Fig. 8.—Magnetising a Fig. 8.—Magnetisation by Divided Stroke. 8 PRACTICAL ELECTRICITY. to be magnetised, and a strong current of electricity passedthrough the coil from a battery or dynamo, as in Fig. 10, thesteel will be permanently magnetised with a N and S-pole,after the current is turned off. Tapping the end of the steelwith a hammer, while it is under the influence of the current,will produce better results. Instead of winding the wirearound the bar, the bar can be inserted in a spool containingmany turns of insulated wire (such as EM, Fig. 11, which canbe slipped off of its iron core) when a stronger magnet will
Size: 2791px × 895px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyo, bookyear1901
