Electricity for everybody; its nature and uses explained (1895)
Atkinson, Philip · New York, The Century Co. · leaf 118
sed, the direction of thepoles will be reversed also. If an unmagnetized steel bar or needle is magnetizedin this way, as already explained, its polarity will be per-manently established in accordance with this rule. Asoft iron bar, or needle, will be temporarily magnetized ina similar manner…
Electricity
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