An international system of electro-therapeutics : for students, general practitioners, and specialists . other words, with the nega-tive electrode of the battery, thatfurnishes the current. The nega-tive electrode of the voltameter isconnected with the negative pole,or positive electrode or gener-ating electrode of the oxygen which appears uponthe positive electrode of the voltameter is termed electro-negative; thehydrogen which is seen at the surface of the negative electrode of thevoltameter is termed electro-positive. In general, every liquid decomposed by the passage of an elec
An international system of electro-therapeutics : for students, general practitioners, and specialists . other words, with the nega-tive electrode of the battery, thatfurnishes the current. The nega-tive electrode of the voltameter isconnected with the negative pole,or positive electrode or gener-ating electrode of the oxygen which appears uponthe positive electrode of the voltameter is termed electro-negative; thehydrogen which is seen at the surface of the negative electrode of thevoltameter is termed electro-positive. In general, every liquid decomposed by the passage of an electriccurrent is called an electrolyte, and it is said to be electrolyzed so long asthe electric action continues. Faraday established, by numerous ex-periments, the laws of definite electrolysis. Without going into details,suffice it to say that two or three cells joined in intensity produce acurrent used to electrolyze water; for instance, for each chemical equiva-lent of hj^drogen set free in the voltameter there will be an equivalentof zinc dissolved in each cell of the battery. The law of Faraday. Fig. 44.—a Voltameter. GALVANISM. A-253 may be said to he the equivalent of chemical work in all parts of thecircuit. If the experiment be made with six cells, instead of with three asindicated above, the quantity of hydrogen set free in one minute will bemuch greater. An idea of the quantity of electricity is thus obtained,and it can be understood how the instrument called voltameter permitsone to measure this quantity. It owes its name to Faraday, who wasperfectly justified in so calling it, as it is in truth an instrument of meas-urement. The same cannot be said of the galvanometer, which it wouldbe better to call galvanoscope; for, in general, it does not measure theintensity of the current which passes through it, and it is only by meansof complicated contrivances that any measurements can be obtained fromits indications. Much to our regret, this instrument (voltameter) is n
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectuterus, bookyear1894
