Cumming, Linnæus, b. 1843. [from old catalog] · New York, D. Van Nostrand · leaf 179
in all respects whosepotentials are V and V. It will be urged in opposite direc-tions by the forces C(V-Vf and C(U-Vy, and thereforewill be urged towards the body of lower potential by the force 160 Electricity. [Book 11. c(u-vy-c{u-vf = 2C(V-V)(u--^~).If £7 be very large compared with both Fand V,… … Fig. 104. being joined by wires. These are separately insulated, andwithin them hangs horizontally a light needle made ofaluminium, maintained at a high potential by being con-nected with the inner coating of a Leyden jar. Whenthe four quadrants are at the same potential, the needleis kept either…
Electricity
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