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The Effect of Height on the Current Distribution Measured with a Vibrating Electrode Probe

“…Included in this category are closely spaced reference electrodes that give a direct measure of the current density from the potential gradient and distance between them. An alternative, more sensitive method of measuring the potential difference is the vibrating probe which converts the potential gradient into an ac voltage by mechanical motion of the sensing electrode or the current generator itself (2,3,6,(11)(12)(13). The amplification of the ac potentials is far more effective than the amplification of dc potentials and results in a more sensitive technique (2).…”