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Action of Lines of Force

المؤلف:  GEORGE A. HOADLEY

المصدر:  ESSENTIALS OF PHYSICS

الجزء والصفحة:  p-307

2025-11-29

565

The conception of lines of force is that they form closed circuits (being continued through the substance of a magnet as in Fig. 1), take the path of least resistance, tend to shorten like stretched rubber bands, and when going in the same direction mutually repel each other.

The repulsion between lines of force going in the same direction is illustrated in Fig. 1, ...., on a plate laid over a horseshoe and a bar magnet. Notice that the lines of filings, which indicate the paths of these lines of force, lie side by side and run off parallel to each other to the right of the two north poles, but that they run from both north poles to the south pole in paths that are either straight or curved, depending upon their position. The mutual side push of lines of magnetic force that pass through the air in the same direction, and also the fact that all lines of magnetic force are closed circuits under tension like elastic bands, will be found of especial importance in connection with electric currents of magnetic force that pass through the air in the same direction, and also the fact that all lines of magnetic force are closed circuits under tension like elastic bands, will be found of especial importance in connection with electric currents.