The Silver VoltameterPart IPart II . d, in consequence, for thesame current density striae were produced in the Rayleigh form when they wereabsent in the Richards form. This effect has also been observed by Guthe# and byYAK DiJKf. In the Richards form, as employed by the latter observer, the kathode * Guthe, <Phys. 19, p. 147, 1904. t VAN Dijk, Ann. der Phys., 19, p. 271, 1906. ON THE SILVER VOLTAMETER. 577 liquid consisted of about 30 cub. centims. of a 20 per cent, solution, and at timesnearly 3 grammes of silver were deposited, the concentration being thus reduced toabout 43 per ce
The Silver VoltameterPart IPart II . d, in consequence, for thesame current density striae were produced in the Rayleigh form when they wereabsent in the Richards form. This effect has also been observed by Guthe# and byYAK DiJKf. In the Richards form, as employed by the latter observer, the kathode * Guthe, <Phys. 19, p. 147, 1904. t VAN Dijk, Ann. der Phys., 19, p. 271, 1906. ON THE SILVER VOLTAMETER. 577 liquid consisted of about 30 cub. centims. of a 20 per cent, solution, and at timesnearly 3 grammes of silver were deposited, the concentration being thus reduced toabout 43 per cent. Professor van Dijk observed little or no striae in the Richardsform, but marked striae in the Rayleigh form. In the Rayleigh form the process of intermixing of the anode and kathode liquidsis considerably accelerated by their ascent and descent respectively. We have madeobservations on the currents of liquid thus produced and find that they may beapproximately represented by fig. 11. The electrolyte which is above the horizontal. Fig. 11. plane containing the sheet of silver which forms the anode is certainly of lowerconcentration than that below this plane when electrolysis has proceeded for a shorttime. It therefore appears that the kathode,film may be stable in the upper portionof the electrolyte when it is unstable in the lower portion. In other words, it shouldbe possible to produce striae at the base and bend of the bowl when the upper portionof the deposit presents a matt surface (see fig. 9). Probably this has been observed byother workers besides ourselves, but we have found no reference to the own deposits at low current densities were often markedly striated at the bend ofthe bowl and gradually merged into the matt surface which existed above the point portion B of the electrolyte, which is partly enclosed by the curved surface of theliquid, is in a most unfavourable position for the renewal of its original concentration,and it is probably of
Size: 1662px × 1503px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectproceed, bookyear1908
