Cumming, Linnæus, b. 1843. [from old catalog] · New York, D. Van Nostrand · leaf 336
n a magnet and electric currentscan, by means of the Amperian hypothesis, be reduced tothe actions of currents on each other, but they can be easilyexplained by actions in the magnetic fields of the magnets,demonstrable by experiment, while the Amperian currentsare only hypothetical. 210. The… … Fig. 207. stretching a soft iron wire, about 1 metre long and a milli-metre in diameter, over a sounding-board (Fig. 207 D, showsa section), and surrounding the wire, through nearly its wholelength by a narrow glass tube, which is supported out ofcontact with the wire. Round the glass tube is…
Electricity
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