The Invention of Leiden Bottle

Leiden bottle is the earliest capacitor used to store static charges. Its structure consists of a glass bottle, inner and outer conductors, and electrodes. When current passes through, charges accumulate on the metal foil, forming an electric field. This electric field creates a potential difference with the small balls inside, causing them to carry an electric charge. Due to the metal foil on the bottle wall being grounded, the charge of the ball will flow into the ground through the metal foil on the bottle wall, forming a discharge circuit. Operation instructions: Shake the handle to generate electricity through friction and store it in the Leyden bottle. As the stored electricity increases, the Leyden bottle gradually lights up. You can also watch the video to learn more.

The unit is designed for unsupervised public use: controls are recessed or shielded, moving parts are enclosed, and the interface is operable by a child of about six with no instruction. Where a screen is used, the language can be switched without changing the hardware, and the content can be replaced on site.