During some work in which capacity measurements were made of plane conducting plates (silver films) in air at very short distances, the writer was able to take some incidental readings of small currents that passed between the plates when they apparently lacked several wave lengths of being in contact. Three sets of measurements were taken in one evening. Figure 1 of figure 38 shows the electrometer deflection plotted with the time. The characteristic shape of the curves suggests an exponential relation.
Proceedings of the Iowa Academy of Science
©1917 Iowa Academy of Science, Inc.
Dodd, L. E.
"Precontact Conduction Currents,"
Proceedings of the Iowa Academy of Science, 24(1), 231-234.
Available at: https://scholarworks.uni.edu/pias/vol24/iss1/36