Static ball

Generate positive and negative charges through two electrode plates, simulate electrons with small balls, and demonstrate the jumping of electrons in electrostatic phenomena. Let visitors understand the basic properties of electric charges, where charges of the same type repel each other and charges of different types attract each other. The exhibit set up two electrode plates and a transparent acrylic container on the booth. The acrylic container has electrode plates on top and bottom, which contain multiple particle balls (charges). When the two electrode plates are charged, the balls can be seen jumping up and down continuously. Visitors can turn the handwheel to activate the device and see the ball continuously jumping up and down under the action of the electrode plate. Target audience: Adolescents aged 6-15. Display format: Electromechanical interactive device operation instructions (audience experience) 1 Turn the handwheel to start the device; 2. Observe the bouncing of the ball (charge). Description of the intrinsic connections between storylines and exhibits: static electricity, positive and negative charges.

Interaction type: Electromechanical interactive. 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.

Static electricity is a type of charge that is in a static state or does not flow. When charges accumulate on an object or surface, static electricity is formed, and charges are divided into positive and negative charges, so static electricity is also divided into positive and negative static electricity. Charge the two plates with positive and negative charges respectively, and the small metal ball will also carry the same number of charges as the lower plate. The same numbered charges repel each other, while the opposite numbered charges attract each other. The small ball is repelled by the lower plate and attracted by the upper plate, jumping towards the upper plate. After coming into contact with it, the charge carried by the small ball is neutralized and instead carries the same charge as the upper plate, so it is discharged back to the lower plate. This process repeats itself, with the ball jumping up and down to transfer charges, and the energy it consumes is provided by an electrostatic power source connected to the plate. Reference materials.