Electrical engineer's pocket-book: a hand-book of useful data for electricians and electrical engineers (1901)
Foster, Horatio A. (Horatio Alvah), 1858-1913 · New York, D. Van Nostrand co.; London, E.& F.N. Spon, ltd. · leaf 235
n the deflection is very low, it is evident that the joint is sound, and itmay then be considered unnecessary to compare it with the piece of cable.It is very important that the trough and apparatus be thoroughly insulated. Electrometer Method. — This method possesses the advantage thatit dispenses… … ELECTROMETER Fig. 4. B is a battery of about 10 cells. B, is a battery of 100 or more cells. As in the preceding test, it is here highly essential that the insulation ofthe trough should be practically perfect, or at least known, so that if notperfect, proper deductions may be made for deflections…
Electrical engineering
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