ed by Volta, consists of a cir-cular metallic dish, a 6, Fig. 50,having a rim about a third of an ^iS- ^^* inch high. This dish is filledwith a mixture of 1 part Veniceturpentine, 1 part shellac, and 1part resin, melted together at agentle heat, and, after being|poured into the dish, allowed tocool… … 1G2 THE LEYDEN JAR. 404. The resinous plate of the Electrophorus becomes nega-tively electrified when rubbed with dry flannel or fur. Uponreplacing the cover, this being insulated, is acted upon induc-tively by the charged plate of resin—the positive electricitybeing attracted to the lower surface,…
Physics
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