Magnetic Permeability
المؤلف:
GEORGE A. HOADLEY
المصدر:
ESSENTIALS OF PHYSICS
الجزء والصفحة:
p-306
2025-11-29
10
Lines of force pass through air and other nonmagnetic substances with greater difficulty than through iron. When a piece of iron is introduced into a space where there are lines of magnetic force, it offers a path of less resistance, and causes a distortion of the lines of force from their previous distributions. The iron, offering a smaller resistance to the passage of the lines of force than the air, is said to have a greater permeability. For this reason, a watch in a thin iron case does not become magnetized.
FIG.1
Demonstration. - Suspend a nail from near one end of a bar magnet, as in Fig. 1. Slide a second magnet of equal strength over it and observe results. Reverse the second magnet, and again slide it over the first. Explain both results.
الاكثر قراءة في المغناطيسية
اخر الاخبار
اخبار العتبة العباسية المقدسة
