界面電氣の硏究(第10報) : U-効果を利用した Impedance matching method による水銀-溶液界面の電氣容量測定(II)

Abstract

We measured the capacities at mercury-n. H2SO4 aq. and mercury-m. KC1 aq. interfaces at various polarizing potentials by the use of "Impedance Matching Method", on which we related in the preceding paper. To make this capable we inserted a condenser of large capacity in the circuit, and we also introduced a method to calculate the resistance of the solution column using two different frequencies of the vibration. In calculating this we assumed the equivalent circuit of the interfacial system to be a condenser (interface) and a resistance (solution column) in series. In the experimental device we used a "Dual Scoper" to detect the wave forms of the voltage and current supplied to the load at the same time. The capacicy-polarizing potential curves obtained in the experiment gave two big and small peaks in both cases, and in general the capacity at positively polarized side against electrocapillary maximum was larger than that at negatively polarized side. This accorded with the results obtained by other researchers.