Who Blows Higher
★Exhibit Content: Bernoulli's principle, fluid mechanics ★Interaction: Electromechanical interaction ★Operation: 1. Press the button; 2. Observe the height of the floating ball in the vertical tube. ★Exhibit Description: The exhibit consists of a transparent vertical tube, a floating ball, a fan system, and an operation button. Visitors press the button to start the fan and observe the height to which the floating ball rises in the tube under the airflow, intuitively experiencing the relationship between flow velocity and air pressure. This exhibit can be set up with multiple parallel competition units, supporting two or more people to compete in blowing height at the same time, increasing interactive fun and allowing participants to understand the basic physics concept of Bernoulli's principle through play. ★Scientific Principle: According to Bernoulli's principle, when fluid flows in a horizontal pipe, pressure is lower where flow velocity is higher, and pressure is higher where flow velocity is lower. The fan blows air into the horizontal pipe, which has several small holes on top, with plastic balls placed on the holes. From Bernoulli's principle, it follows that different flow velocities in the horizontal pipe result in different rising heights of the balls on the small holes at the top of the vertical tubes.
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- 1.2×0.7×1.5 1.2×0.7×1.5Dimensions (unit: m) 1.2×0.7×1.5 Brand: KexMall Model: PopsciCat-mechanics-192 1. Materials ① Main body: Q235-1.5mm sheet metal with baked paint (orange and white color scheme, scratch-resistant and wear-resistant) ② Tabletop: 12mm Kelesi artificial stone tabletop (waterproof, wear-resistant, easy to clean) ③ Pipe system: Variable cross-section horizontal pipe (transparent acrylic, highly transparent and clear), vertical tube (transparent acrylic, with built-in plastic balls) ④ Instruction plate, graphic panel: Acrylic UV printing (including Bernoulli's principle, operation guide) ⑤ Electrical control box: Cold-rolled sheet metal with baked paint, fan drive power supply, short-circuit protection components ⑥ Electrical control box: Cold-rolled sheet metal with baked paint, containing control circuit, switching power supply, circuit breaker, terminal blocks, etc. 2. Main Configuration ① Fluid system: Variable cross-section horizontal pipe, transparent vertical tube (with built-in plastic balls) ② Power device: Low-noise fan (air supply to drive airflow) ③ Interactive device: Colorful illuminated micro switch button (fan start control) ④ Electrical control: Electrical logic control system, equipped with Inertia® K2 PLC controller with protection specially for science exhibit ⑤ Drive device: Fan drive module, airflow adjustment components 3. Layout Requirements ① Power requirement: AC100-240V, 50/60Hz/50～60Hz 300W (standard three-wire socket, for fan power supply) ② Installation method: Direct placement ③ Entry passage: Door frame dimensions (width×height) ≥1.4m×1.6m (to accommodate the entire exhibit), continuous turning interval in passage ≥2m ④ Maintenance access: Not required
★Exhibit Content: Bernoulli's principle, fluid mechanics ★Interaction: Electromechanical interaction ★Operation: 1. Press the button; 2. Observe the height of the floating ball in the vertical tube. ★Exhibit Description: The exhibit consists of a transparent vertical tube, a floating ball, a fan system, and an operation button. Visitors press the button to start the fan and observe the height to which the floating ball rises in the tube under the airflow, intuitively experiencing the relationship between flow velocity and air pressure. This exhibit can be set up with multiple parallel competition units, supporting two or more people to compete in blowing height at the same time, increasing interactive fun and allowing participants to understand the basic physics concept of Bernoulli's principle through play. ★Scientific Principle: According to Bernoulli's principle, when fluid flows in a horizontal pipe, pressure is lower where flow velocity is higher, and pressure is higher where flow velocity is lower. The fan blows air into the horizontal pipe, which has several small holes on top, with plastic balls placed on the holes. From Bernoulli's principle, it follows that different flow velocities in the horizontal pipe result in different rising heights of the balls on the small holes at the top of the vertical tubes.
Review
Principle Display: ★★★ Interaction Effect: ★★★★ Ease of Installation: ★★★★★ Durability: ★★★★ Overall Rating: ★★★