Original: The idea for the Leyden jar was discovered by both German scientist and jurist Ewald Georg von Kleist, and by two Dutchmen â "Musschenbroek and Cunaeus. It was in 1744 when von Kleist lined a glass jar with silver foil, and charged the foil with a friction machine.
Simplified: Ewald Georg von Kleist developed this system in Germany in 1744.