The Leyden jar is an early device for storing electric charge invented in 1745 by Pieter van Musschenbroek(1692–1761). It was the first capacitor. Leyden jars were used to conduct many early experiments in electricity.
The Wimshurst machine is an electrostatic device for generating high voltages developed between 1880 and 1883 by British inventor James Wimshurst (1832 – 19003). It has a distinctive appearance with two large contra-rotating discs mounted in a vertical plane, two cross bars with metallic brushes, and a spark gap formed by two metal spheres.
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