Static Bumper Balls
★Exhibit Content: Electrostatic Phenomena ★Interaction: Electromechanical Interaction ★Operation: Press the start button and observe the movement of the small balls. Function Overview: This exhibit mainly consists of electrodes and metal balls, demonstrating the principles of static electricity. The central sphere of the exhibit is a negatively charged electrostatic electrode. The foam balls wrapped with metal bands are polarized under the electrostatic field of the central electrode: the side facing the central electrode becomes positively charged while the other side becomes negatively charged, but the total charge of the entire sphere remains neutral. Since the positively charged side faces the central electrode, under the effect of opposite charges attracting, it moves toward the central electrode. After touching the electrode, it acquires the same charge. The ball with the same charge is then repelled away from the central electrode due to electrostatic repulsion and moves outward; upon touching the outer grounded ring, the charge is released, and the ball returns to its initial state, repeating the previous motion. ★Scientific Principle: Static electricity is the situation where charges are at rest and the corresponding electromagnetic field quantities do not change with time, an important special case in electromagnetism. After pressing the button to power the exhibit, the small balls on the platform will continuously roll around because the central sphere is the positive electrode and the stainless steel ring around the disc is the negative electrode. After power is on, the small balls and the central electrode are both positively charged, so under the repulsive force of like charges, the balls are bounced away from the central electrode; when the balls contact the stainless steel ring around the disc, the positive charge on the balls neutralizes with the negative charge, and then they become negatively charged, so they are attracted back to the positively charged central electrode. This cycle repeats, creating the interesting electrostatic rolling balls. Applications of static electricity include electrostatic dust removal, electrostatic spraying, electrostatic flocking, electrostatic copying, air purification, etc.
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- 0.75×0.75×0.95 0.75×0.75×0.95Dimensions (unit: m): 0.75×0.75×0.95 Brand: PopsciCat Model: PopsciCat-ElectroMagnetic-042 1. Materials: ① Platform: frame 2mm cold-rolled sheet, enclosure 2.0mm cold-rolled sheet, surface baked paint ② Tabletop: Kelaisi artificial stone, thickness ≥12mm, with flame-retardant board underneath ③ Instruction plate, graphic panel: 5mm acrylic UV printing ④ Maintenance door: 2.0mm cold-rolled sheet with baked paint surface ⑤ Protective cover: transparent acrylic + orange acrylic ⑥ Electrode: 304 stainless steel ⑦ Electrical control box: cold-rolled sheet baked paint enclosure, containing control circuit, switching power supply, circuit breaker, terminal blocks, etc. 2. Main Configuration: ① Electrical control: electrical logic control system, equipped with Guanjian® K1 type PLC controller with protection specially for science exhibits ② Button: self-resetting 22mm stainless steel metal button with ring light; LED voltage not higher than 12V 3. Installation Requirements: ① Power requirement: AC100-240V, 50/60Hz 100W (standard three-wire socket) ② Installation base: place directly ③ Entry passage: door frame size (width×height) ≥1.0m×1.9m, continuous turning interval ≥1m ④ Maintenance access: not required
★Exhibit Content: Electrostatic Phenomena ★Interaction: Electromechanical Interaction ★Operation: Press the start button and observe the movement of the small balls. Function Overview: This exhibit mainly consists of electrodes and metal balls, demonstrating the principles of static electricity. The central sphere of the exhibit is a negatively charged electrostatic electrode. The foam balls wrapped with metal bands are polarized under the electrostatic field of the central electrode: the side facing the central electrode becomes positively charged while the other side becomes negatively charged, but the total charge of the entire sphere remains neutral. Since the positively charged side faces the central electrode, under the effect of opposite charges attracting, it moves toward the central electrode. After touching the electrode, it acquires the same charge. The ball with the same charge is then repelled away from the central electrode due to electrostatic repulsion and moves outward; upon touching the outer grounded ring, the charge is released, and the ball returns to its initial state, repeating the previous motion. ★Scientific Principle: Static electricity is the situation where charges are at rest and the corresponding electromagnetic field quantities do not change with time, an important special case in electromagnetism. After pressing the button to power the exhibit, the small balls on the platform will continuously roll around because the central sphere is the positive electrode and the stainless steel ring around the disc is the negative electrode. After power is on, the small balls and the central electrode are both positively charged, so under the repulsive force of like charges, the balls are bounced away from the central electrode; when the balls contact the stainless steel ring around the disc, the positive charge on the balls neutralizes with the negative charge, and then they become negatively charged, so they are attracted back to the positively charged central electrode. This cycle repeats, creating the interesting electrostatic rolling balls. Applications of static electricity include electrostatic dust removal, electrostatic spraying, electrostatic flocking, electrostatic copying, air purification, etc.
Review
Principle Display: ★★★ Interaction Effect: ★★★★★ Ease of Installation: ★★★★★ Durability: ★★★★ Overall Rating: ★★★★