The Obedient Ball
Exhibit Dimensions: Transport dimensions: 540×440×640mm, Display dimensions: 540×440×1450mm. Exhibit Composition: Consists of ABS plastic molded cabinet, ABS plastic molded base, ABS milky white plastic molded operation countertop with color silk-screen flip-up instruction board, delay circuit, stainless steel illuminated self-reset metal button, leakage protector, high-power fan, small ball, transparent acrylic tube, etc. Turn on the power, the small ball circulates 'running' in the acrylic tube, interestingly demonstrating Bernoulli's principle. Press the button to start the fan, and you will see the small ball moving along the airflow, when it reaches the upper end of the U-shaped tube, it 'obediently' changes its vertical upward motion direction and enters the horizontal pipe. Why does the small ball obey so well? According to Bernoulli's principle: the greater the fluid flow velocity, the smaller the pressure; the smaller the flow velocity, the greater the pressure. When the fan starts, the vertical upward airflow lifts the ball in the tube and moves it upward along the center of the airflow. The vertical airflow creates a negative pressure in the U-shaped tube, with the lowest pressure at the lower end. When the ball moves to the upper end of the U-shaped tube, under the action of negative pressure, it 'obediently' changes its vertical upward motion direction, is sucked into the horizontal pipe and moves toward the lower end.
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- China Science and Technology Museum Standard Edition CSTM Standard EditionExhibit Dimensions: Transport dimensions: 540×440×640mm, Display dimensions: 540×440×1450mm. Exhibit Composition: Consists of ABS plastic molded cabinet, ABS plastic molded base, ABS milky white plastic molded operation countertop with color silk-screen flip-up instruction board, delay circuit, stainless steel illuminated self-reset metal button, leakage protector, high-power fan, small ball, transparent acrylic tube, etc. Turn on the power, the small ball circulates 'running' in the acrylic tube, interestingly demonstrating Bernoulli's principle. Press the button to start the fan, and you will see the small ball moving along the airflow, when it reaches the upper end of the U-shaped tube, it 'obediently' changes its vertical upward motion direction and enters the horizontal pipe. Why does the small ball obey so well? According to Bernoulli's principle: the greater the fluid flow velocity, the smaller the pressure; the smaller the flow velocity, the greater the pressure. When the fan starts, the vertical upward airflow lifts the ball in the tube and moves it upward along the center of the airflow. The vertical airflow creates a negative pressure in the U-shaped tube, with the lowest pressure at the lower end. When the ball moves to the upper end of the U-shaped tube, under the action of negative pressure, it 'obediently' changes its vertical upward motion direction, is sucked into the horizontal pipe and moves toward the lower end.
Exhibit Dimensions: Transport dimensions: 540×440×640mm, Display dimensions: 540×440×1450mm. Exhibit Composition: Consists of ABS plastic molded cabinet, ABS plastic molded base, ABS milky white plastic molded operation countertop with color silk-screen flip-up instruction board, delay circuit, stainless steel illuminated self-reset metal button, leakage protector, high-power fan, small ball, transparent acrylic tube, etc. Turn on the power, the small ball circulates 'running' in the acrylic tube, interestingly demonstrating Bernoulli's principle. Press the button to start the fan, and you will see the small ball moving along the airflow, when it reaches the upper end of the U-shaped tube, it 'obediently' changes its vertical upward motion direction and enters the horizontal pipe. Why does the small ball obey so well? According to Bernoulli's principle: the greater the fluid flow velocity, the smaller the pressure; the smaller the flow velocity, the greater the pressure. When the fan starts, the vertical upward airflow lifts the ball in the tube and moves it upward along the center of the airflow. The vertical airflow creates a negative pressure in the U-shaped tube, with the lowest pressure at the lower end. When the ball moves to the upper end of the U-shaped tube, under the action of negative pressure, it 'obediently' changes its vertical upward motion direction, is sucked into the horizontal pipe and moves toward the lower end.
- Optimized Popular Edition Optimized EditionExhibit Dimensions: Transport dimensions: 540×440×640mm, Display dimensions: 540×440×1450mm. Exhibit Composition: Consists of ABS plastic molded cabinet, ABS plastic molded base, ABS milky white plastic molded operation countertop with color silk-screen flip-up instruction board, delay circuit, stainless steel illuminated self-reset metal button, leakage protector, high-power fan, small ball, transparent acrylic tube, etc. Turn on the power, the small ball circulates 'running' in the acrylic tube, interestingly demonstrating Bernoulli's principle. Press the button to start the fan, and you will see the small ball moving along the airflow, when it reaches the upper end of the U-shaped tube, it 'obediently' changes its vertical upward motion direction and enters the horizontal pipe. Why does the small ball obey so well? According to Bernoulli's principle: the greater the fluid flow velocity, the smaller the pressure; the smaller the flow velocity, the greater the pressure. When the fan starts, the vertical upward airflow lifts the ball in the tube and moves it upward along the center of the airflow. The vertical airflow creates a negative pressure in the U-shaped tube, with the lowest pressure at the lower end. When the ball moves to the upper end of the U-shaped tube, under the action of negative pressure, it 'obediently' changes its vertical upward motion direction, is sucked into the horizontal pipe and moves toward the lower end.
Exhibit Dimensions: Transport dimensions: 540×440×640mm, Display dimensions: 540×440×1450mm. Exhibit Composition: Consists of ABS plastic molded cabinet, ABS plastic molded base, ABS milky white plastic molded operation countertop with color silk-screen flip-up instruction board, delay circuit, stainless steel illuminated self-reset metal button, leakage protector, high-power fan, small ball, transparent acrylic tube, etc. Turn on the power, the small ball circulates 'running' in the acrylic tube, interestingly demonstrating Bernoulli's principle. Press the button to start the fan, and you will see the small ball moving along the airflow, when it reaches the upper end of the U-shaped tube, it 'obediently' changes its vertical upward motion direction and enters the horizontal pipe. Why does the small ball obey so well? According to Bernoulli's principle: the greater the fluid flow velocity, the smaller the pressure; the smaller the flow velocity, the greater the pressure. When the fan starts, the vertical upward airflow lifts the ball in the tube and moves it upward along the center of the airflow. The vertical airflow creates a negative pressure in the U-shaped tube, with the lowest pressure at the lower end. When the ball moves to the upper end of the U-shaped tube, under the action of negative pressure, it 'obediently' changes its vertical upward motion direction, is sucked into the horizontal pipe and moves toward the lower end.