Cumming, Linnæus, b. 1843. [from old catalog] · New York, D. Van Nostrand · leaf 271
t. 147) give the potential-gradient. If two points B, Fbetaken in AB and AC respectively, so that AB : BB :: AF: FC 251 252 Electricity. [Book III. and EG, FH be drawn parallel to AD, then EG=FH forEG BE , .F.ff <7i? AD~AB and ADAG which shows i? and i*7 to be at the same potential. Hence a… … Fig. 154. gaps in the sides being left for the resistances. In the diagonalAB is placed a battery, and in the other diagonal EF the gal-vanometer. Into one side he introduced the resistance to bemeasured, and into the others he put known resistances,which he varied till the galvanometer remained at…
Electricity
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