Davis's manual of magnetism : including galvanism, magnetism, electro-magnetism, electro-dynamics, magneto-electricity, and thermo-electricity . eries, proportionalto the quantity of zinc dissolved; and where a smallsurface of zinc gives a large current, it is acted uponwith greater rapidity. The intensity of the currentproduced in these forms depends upon the chemicalaffinities which are concerned; and on this accountthere is a gain in the sulphate of copper battery overSmees, and a still greater in Groves. 44. The construction of Groves Battery is shownin Fig. 17. The containing vessel is gl
Davis's manual of magnetism : including galvanism, magnetism, electro-magnetism, electro-dynamics, magneto-electricity, and thermo-electricity . eries, proportionalto the quantity of zinc dissolved; and where a smallsurface of zinc gives a large current, it is acted uponwith greater rapidity. The intensity of the currentproduced in these forms depends upon the chemicalaffinities which are concerned; and on this accountthere is a gain in the sulphate of copper battery overSmees, and a still greater in Groves. 44. The construction of Groves Battery is shownin Fig. 17. The containing vessel is glass. With-Fi^. 17. i^^ t^^s is a thick cylinder of amal-gamated zinc, standing on short legs,and divided by a longitudinal openingon one side, in order to allow the acidto circulate freely. Inside of this is aporous cell of unglazed porcelain, con-taining the nitric acid and strip of plat-inum. The platinum is supported by a strip of brass,^fixed, by a thumb-screw and an insulating piece ofivory, to the arm proceeding from the zinc amalgamated zinc is not acted upon by thedilute sulphuric acid until the circuit of the battery. BATTERY. 29 is completed; but a small portion of the nitric acidfilters through the porous cell, by which the zincwould be readily attacked. It is therefore advisableto remove it from the acid when the battery is outof action for any length of time. 45. Fig. 18 represents a series of twelve pairsof Groves Battery. In this compound battery, each Fig. 18.
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectmagnetism, bookyear18
