Small, Sidney Aylmer, 1876- [from old catalog] · Chicago, F. J. Drake & co · leaf 168
gs. Lift iron filings over the glass and tap very gently.The filings will arrange themselves and show the direc-tion of the magnetic force at all points. Many different combinations of poles should be tried.Figs. 80 and 81 show two magnetic spectrums. MAGNETIC INDUCTION 169 Question 14. What is a… … Pig. 81. The Magnetic Field of a Magnet Pole. Magnet at RightAngles to Observer. Question 15. What is magnetic induction? Answer. When a piece of soft iron free from mag-netism is placed in a magnetic field it becomes a magnetby induction. Fig. 82 shows this. The part of the iron under thenorth…
Electricity
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