. The medical and surgical uses of electricity. . +Na CIO3 Fe^Cle MnOt, CUSO4 AgclHgsSOi Hg2S04Hg2S04 NoneNoneNoneNoneNone CopperPlatinizedsilverCarbonCarbon PlatinumCarbonCarbonCarbonCarbonCarbon CarbonCarbon Copper SilverCarbonMercuryMercuryMercuryCarbonIronLeadCarbon LeadCarbonCopper Lead to to to Poggendorff (G r e n e t, Fuller, etc.) Grove Bunsen .. 1-4 Lalande Upward Fitch Papst Obach (dry) Daniell (Meidinger, Min- De la Rue Marie Davy Clark (Standard) Weston Von Helmholtz Walker
. The medical and surgical uses of electricity. . +Na CIO3 Fe^Cle MnOt, CUSO4 AgclHgsSOi Hg2S04Hg2S04 NoneNoneNoneNoneNone CopperPlatinizedsilverCarbonCarbon PlatinumCarbonCarbonCarbonCarbonCarbon CarbonCarbon Copper SilverCarbonMercuryMercuryMercuryCarbonIronLeadCarbon LeadCarbonCopper Lead to to to Poggendorff (G r e n e t, Fuller, etc.) Grove Bunsen .. 1-4 Lalande Upward Fitch Papst Obach (dry) Daniell (Meidinger, Min- De la Rue Marie Davy Clark (Standard) Weston Von Helmholtz Walker ■ 65 Callan. 1-7 Becquerel • 55 Niaudet Duchemin Howell Gordon-Burnham Accumulators.(Plante, Faure, etc.) . . to Before closing the chapter on voltaic batteries, we desire to call at-tention to a new battery— the Gordon-Burnham battery (Fig. 26). It iswell adapted for the illumination of examination lamps, minor cauterywork, and operating motors. It is of the zinc and oxide of copper type, 38 greatly improved, and develops a large amount of energy. The electro-motive force is about one volt. Internal resistance .04 of an ohm, or prac-tically nil. It operates equally as well on closedor open circuits. The points of superiority as determined bycareful tests and practical demonstrations are:Long life, discharging at a rate of eight centiam-peres for six months without any attention; effi-ciency, free from local action; no gases or odors,and maximum energy. Instruments for Measuring Electricity.—Theinstruments for measuring electricity are quitenumerous, and some of them are very is necessary here to describe only a sufficientnumber to illustrate the principles involved. Galvanojneters.—A galvanometer is an in-strument for indicating the presence and direc-^^- ^^- tion of a current, and for measuring its strength. There are several varieties of galvanometers, but all are constructed on thesame general principle—
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Keywords: ., bookcentury1800, bookdecade1890, bookpublishernewyo, bookyear1896
