The Distribution of Magnetism in a Magnet
المؤلف:
GEORGE A. HOADLEY
المصدر:
ESSENTIALS OF PHYSICS
الجزء والصفحة:
P-304
2025-11-26
53
The Distribution of Magnetism in a Magnet may be found by laying a bar magnet upon a table, suspending above it a magnetized sewing needle, and passing the needle from end to end. At the middle of the magnet the needle will be parallel to it. This is called the neutral point, which may be defined as that point in a magnet where all the lines of force are within the mag net, none of them passing into the air. At other points the needle will dip more or less, as in Fig. 1. At two points near the ends the needle stands practically vertical; these points locate the poles.

FIG.1
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