Lynde, Carleton John, b. 1872 · New York : Macmillan · leaf 186
on or de-magnetization is said to possess retentimty. Soft iron is morepermeable than steel, but has less retentivity. Magnetic lines of force. — It is important that we learn themeaning of the term magnetic line of force because we useit to explain the working of many electrical appliances. A… … Fig. 112. — The compass moves along amagnetic line of force. south pole of a magnet. We cannot obtain a free north pole, that is, a north pole separate from a south pole, but we can use a small magnetic needle to mark out the magnetic lines of force of a magnet.If a small compass is placed near the…
Physics · Home Economics
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