Leyden

Leyden refers to the Leyden jar, an early device used to store and accumulate static electric charge. It consists of a glass jar coated inside and outside with metal foil, with a metal rod connecting to the inner coating. When charged, the jar holds a significant amount of static electricity, which can be discharged to power experiments and demonstrations. The Leyden jar was a crucial step in understanding electrical storage and behavior before modern batteries and capacitors. Its invention in the 18th century marked an important development in the study and application of electricity.