Amphora Iron Ages amphorae spread around the ancient Mediterranean world, being used by the ancient Greeks and Romans as the principal means for transporting and storing grapes, olive oil, wine, oil, olives, grain, fish, and other commodities. They were produced on an industrial scale until approximately the 7th century AD. Wooden and skin containers seem to have supplanted amphorae thereafter. They influenced Chinese ceramics and other East Asian ceramic cultures, especially as a fancy shape for high-quality decorative ceramics, and continued to be produced there long after they had ceased to be used further west. Besides coarse amphorae used for storage
Leyden jar van Musschenbroek of Leiden (Leyden) in 1745–1746. The invention was named after the city. The Leyden jar was used to conduct many early experiments in electricity, and its discovery was of fundamental importance in the study of electrostatics. The Leyden jar was the first means of accumulating and preserving electric charge in large quantities that could be discharged at the experimenter's will, thus overcoming a significant limit to early research into electrical conduction. Leyden jars are still used in education to demonstrate the principles of electrostatics. The Ancient Greeks already knew that pieces of amber could attract lightweight particles after