Elementary natural philosophy : designed for high schools and academies (1881)
Griffin, La Roy F. (La Roy Freese), 1844-1916 · Philadelphia : Sower, Potts & Co. · leaf 269
pper vesselcontaining a saturated solution of copper sul-phate. The vessel acts as the + pole of thebattery. Crystals of the salt are placed upona shelf to dissolve as fast as the copper sulphateis removed, and so keep the solution saturated.Inside of the copper, is a vessel of porous earth-enware… … Fig. 315. ELECTEICITY. which passes into the porous cup, while copper is depositedupon the surface of the copper vessel. This action rendersthe current constant. 880. Gravity Battery. This is a modification of Daniells,in which the liquids are kept separate by a difference in spe-cific gravity. The…
Physics
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