Small, Sidney Aylmer, 1876- [from old catalog] · Chicago, F. J. Drake & co · leaf 182
Fig. 97. Horse-shoe Magnet Arranged for Test of Lifting Power. … Fig. 98. Testing LiftingPower of a Solenoid. A magnet with round or pointed pole pieces will liftmore than the same magnet with flat or broadened polepieces. The same magnet may have its lifting powerchanged by unscrewing its pole pieces and screwing ona flatter set. It is an excellent joke to wind…
Electricity
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