Cumming, Linnæus, b. 1843. [from old catalog] · New York, D. Van Nostrand · leaf 37
its ends.Fig. 19 showrs the lines of force in a system consisting of twoopposite magnet poles and a bar of iron between them. If, as sometimes happens in a magnet, intermediate poles i8 Electricity. [Book I. by intention or accident have been developed, these are atonce shown by the behaviour of… … Fig. 18. in a single bar magnet. AB in Fig. 20, the line of force PF atP will be found by compounding forces in the directions APand PB, directed respectively from the north and towardsthe south poles. 13. Strength of Magnetic Field of a Single Pole,by Coulombs Balance.—We are now in a position to…
Electricity
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