Topple the Skyscraper with a Finger
★Exhibit Content: Domino effect, lever torque principle ★Interaction: Electromechanical interaction ★Operation: Visitors push the start lever to knock down the first domino and observe the chain reaction of dominoes; after the experiment, the dominoes automatically reset, ready for the next demonstration. ★Exhibit Description: The exhibit consists of a domino experiment device. The domino experiment device comprises a start lever, 2 sets of domino demonstration models, a reset electromechanical device, and a glass display case. One set of domino models is arranged from small to large, and the other from large to small. In the small-to-large arrangement, each subsequent domino is about 1.2 times the size of the previous one; the number of models is designed to ensure a clear experimental effect. The two sets of domino demonstration models are displayed in a closed glass case, and visitors cannot touch the domino models. After pushing the start lever, a small mallet connected to the lever knocks down the dominoes, pushing the first domino to fall, and so on. When the last domino falls, the dominoes automatically reset; before resetting, the mechanical device is in a locked state. ★Scientific Principle: With the two arrangements, the same domino falling onto another domino produces different torques and takes different times to fall. If it hits the top of a smaller domino, the lever arm is larger, the torque is correspondingly larger, and the angular velocity is greater (both from 90° to 180°), so the overall falling speed is faster and the time is shorter; whereas in the small-to-large arrangement, the smaller dominoes fall first and hit the middle of the next domino, resulting in smaller torque, lower speed, and longer time required. In an interconnected system, a very small initial energy can produce a series of chain reactions; this phenomenon is called the "domino effect" or "domino effect".
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- 1.2×0.7×1.1 1.2×0.7×1.1Dimensions (unit: m) 1.2×0.7×1.1 Brand: PopsciCat Model: PopsciCat-mechanics-191 1. Materials ① Main body of the stand: Q235-1.5mm sheet metal with baked paint + 12mm Kelesi artificial stone countertop ② Protective cover: colored + high-transparency acrylic material, using hot bending process, smooth edges, stable structure ③ Domino models: two sets of domino models (eco-friendly material, wear-resistant and drop-resistant, designed at a 1.2 ratio) ④ Interactive devices: start lever (anti-slip soft rubber grip, metal transmission), reset button (colored illuminated micro switch) ⑤ Instruction plate, graphic panel: acrylic UV printing ⑥ Electrical control box: cold-rolled sheet metal with baked paint enclosure, motor drive power supply, short-circuit protection components ⑦ Electrical control box: cold-rolled sheet metal with baked paint enclosure, containing control circuit, switching power supply, circuit breaker, terminal blocks, etc. 2. Main Configuration ① Core experimental device: two sets of domino demonstration models ② Interactive control system: HF-PANDA lever drive, one-button reset electromechanical device (automatic domino reset) ③ Electrical control: electrical logic control system, equipped with Inertia® K2 PLC controller with protection specially for science exhibits ④ Drive device: reset motor module, lever transmission module, domino reset positioning components 3. Layout Requirements ① Power requirement: AC100-240V, 50/60Hz/50～60Hz 500W (standard three-wire socket) ② Installation method: direct placement ③ Entry passage: door frame dimensions (width×height) ≥1.6m×1.2m, continuous turning interval in passage ≥2m ④ Maintenance access: not required
★Exhibit Content: Domino effect, lever torque principle ★Interaction: Electromechanical interaction ★Operation: Visitors push the start lever to knock down the first domino and observe the chain reaction of dominoes; after the experiment, the dominoes automatically reset, ready for the next demonstration. ★Exhibit Description: The exhibit consists of a domino experiment device. The domino experiment device comprises a start lever, 2 sets of domino demonstration models, a reset electromechanical device, and a glass display case. One set of domino models is arranged from small to large, and the other from large to small. In the small-to-large arrangement, each subsequent domino is about 1.2 times the size of the previous one; the number of models is designed to ensure a clear experimental effect. The two sets of domino demonstration models are displayed in a closed glass case, and visitors cannot touch the domino models. After pushing the start lever, a small mallet connected to the lever knocks down the dominoes, pushing the first domino to fall, and so on. When the last domino falls, the dominoes automatically reset; before resetting, the mechanical device is in a locked state. ★Scientific Principle: With the two arrangements, the same domino falling onto another domino produces different torques and takes different times to fall. If it hits the top of a smaller domino, the lever arm is larger, the torque is correspondingly larger, and the angular velocity is greater (both from 90° to 180°), so the overall falling speed is faster and the time is shorter; whereas in the small-to-large arrangement, the smaller dominoes fall first and hit the middle of the next domino, resulting in smaller torque, lower speed, and longer time required. In an interconnected system, a very small initial energy can produce a series of chain reactions; this phenomenon is called the "domino effect" or "domino effect".
Review
Principle Display: ★★★★ Interaction Effect: ★★★★ Ease of Installation: ★★★★ Durability: ★★★ Overall Rating: ★★★