Cumming, Linnæus, b. 1843. [from old catalog] · New York, D. Van Nostrand · leaf 183
Fig. 107. two inductors (AB) in the form of half-cylinders separatedby a small air space, and two insulated metal carriers (CD) 164 Electricity. [Book II. attached to an ebonite spindle, by which they can be rapidlyrotated between the inductors. … Fig. 108. One inductor is insulated, but connected by a wire with theacid in the jar, and the other is to earth. By means of twosprings (E and F) which pass without contact through slitscut in the faces of the inductors, the two carriers come for amoment into contact with each other when under full…
Electricity
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