Bernoulli's principle

By interacting with small balls, observe them floating under the influence of airflow and understand Bernoulli's principle. The exhibit features multiple metal tubes with different diameters on the ground, and air continuously erupts from the tubes. Participants can choose to place the ball above the metal tube and find that the ball can float in the air. By moving the air outlet of the metal tube, they can change the direction of the wind and finally throw the ball into the metal ring. So as to understand Bernoulli's principle. Target audience: Adolescents aged 6-15. Display format: Electromechanical interactive device operation instructions (audience experience) 1 Participants choose to place the ball above the metal tube; 2. Change the direction of the air outlet of the metal tube to encourage the small balls to move together; 3. Put the ball into the metal ring; 4. End the experience and leave the exhibit. The basic principles of hydraulics, Bernoulli's principle, describe the intrinsic connections between storylines and exhibits.

Interaction type: Interactive installation. 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.

1. Airflow is the upward and downward movement of air, with upward movement being called ascending airflow and downward movement being called descending airflow. Upward airflow can be divided into various types such as dynamic airflow, thermal airflow, mountain waves, etc. Airflow is an academic term in meteorology, while wind is our daily language. In fact, whether the air is moving horizontally or vertically, it can be called airflow. But we cannot feel the vertical movement of air, we can only feel the horizontal airflow, so the wind in daily life can only refer to the horizontal airflow. 2. Daniel Bernoulli proposed the Bernoulli principle in 1726. This is the fundamental principle used in hydraulics before the establishment of the continuum theory equations in fluid mechanics, which essentially involves the conservation of mechanical energy in fluids. Namely: kinetic energy+gravitational potential energy+pressure potential energy=constant. Its most famous inference is that when flowing at a constant height, the flow velocity is high, and the pressure is.