. A treatise on electrolysis and its applications to therapeutical and surgical treatment in disease . Fig. 13. purpose. The introduction of the various resistances from one ohm to20,000 ohms is made by unscrewing the thumb screw connecting adjacentbrass plates, to each of which is attached German silver wire from the resis-tance bobbins, which have measured resistances; each of these adjacent brassplates have resistances which differ from each other by a fixed value, so that 2° 2° 1°. Fig. 15.—Set of resistance coils. Measured resistancesare introduced into the circuit by placing into it the
. A treatise on electrolysis and its applications to therapeutical and surgical treatment in disease . Fig. 13. purpose. The introduction of the various resistances from one ohm to20,000 ohms is made by unscrewing the thumb screw connecting adjacentbrass plates, to each of which is attached German silver wire from the resis-tance bobbins, which have measured resistances; each of these adjacent brassplates have resistances which differ from each other by a fixed value, so that 2° 2° 1°. Fig. 15.—Set of resistance coils. Measured resistancesare introduced into the circuit by placing into it the coilsmarked i, ~. 8, 5, 10. SS, binding screws for , B, C, handles for putting the resistance in and out ofcircuit. the attachment of the resistance wires to the several bobbins (Fig. 15) areseparated, unless the connecting screws of the several divisions are screwedhome to make a contact over each separation between the brass accompanying illustration is borrowed from De Watteville. This 88 ELECTROLYSIS. figure (Fig. 15), represents a set of resistance coils from one ohm to ten;these coils are made of German silver wire because this metal givesapproximately accurate measurements, which are not dependent uponatmospheric or thermo-metrical changes In most boxes the contact between the brass plates is accurately madeby nicely fitting and tapering brass plugs; to these plates the terminal wiresof tbe several resistance bobbins are soldered carefully with r
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Keywords: ., bookcentury1800, bookdecade1880, bookidtreatiseonelectr00amorric
