Fig. 4: Alessandro Volta’s experiments with the condensatore
“[…] Volta made the following experiment: he formed a thin metallic plate with two pieces, C, Z, fig. 4, the one Z of zinc, the other C of copper, soldered end to end; then taking between the fingers the extremity Z, composed of zinc, he touched with the copper extremity the upper plate of a condenser, which is also of copper, and the under plate of which communicated with the ground. After the contact, the plate, which has been touched, was found to be electrified resinously” (p. 430).
