An elementary book on electricity and magnetism and their applications . Sal AmmoniacAcid Fig. 8. - Leclanche cell withporous cup. BATTERIES FOR PRODUCING ELECTRIC CURRENTS 19. chemical action. Leclanche cells are called open-circuit cellson account of the small chemical action which goes on in themwhen the circuit is open, and be-cause they are not satisfactory incontinuous service. 19. Electrochemical depolariza-tion. Daniell cell. The thirdmethod of depolarizing introducesmore complicated chemical reac-tions, but concerning these wreneed not give much detail. Bythis method cells are constru
An elementary book on electricity and magnetism and their applications . Sal AmmoniacAcid Fig. 8. - Leclanche cell withporous cup. BATTERIES FOR PRODUCING ELECTRIC CURRENTS 19. chemical action. Leclanche cells are called open-circuit cellson account of the small chemical action which goes on in themwhen the circuit is open, and be-cause they are not satisfactory incontinuous service. 19. Electrochemical depolariza-tion. Daniell cell. The thirdmethod of depolarizing introducesmore complicated chemical reac-tions, but concerning these wreneed not give much detail. Bythis method cells are constructedwhich give excellent results incontinuous service, and which are,therefore, called closed-circuit of these is probably the mostcommonly used of any form ofwet battery. This is the or-dinary gravity battery, or coppersulphate battery, which is so much used in telegraphy. The original Daniell cell(Fig. 10), from which thegravity cell came, is still oftenused in experimental workwhen a constant voltage isneeded in electrical measure-ments. The active liquid isdilute sulphuric acid in whichis immersed the zinc or nega-tive plate. The copper plateis immersed in
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectmagnetism, bookyear19
