Dancing scarves

Show the direction and speed of airflow in different routes through lighter scarves, and understand the principles of airflow direction and velocity. The exhibit consists of multiple winding transparent pipes and fans. Visitors put different colored scarves into the entrance of the pipeline, and the airflow will lead the scarves to quickly move along the pipeline, and finally leave through the upper outlet of the pipeline and fall down. During this process, visitors can observe the movement trajectory of the scarf caused by the airflow and the air resistance experienced by the scarf floating during the falling process. Target audience: Adolescents aged 6-15. Display format: Electromechanical interactive device operation instructions (audience experience) 1 Visitors place lightweight ribbons through the opening; 2. Observe the movement trajectory of the ribbon in the pipeline; After a set period of time, the system will release the ribbon, and visitors can start dropping the ribbon again. Fluid description of the intrinsic connections between the storyline 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.

Air resistance refers to the hindering force of air on moving objects, which is generated by the elastic force of air on moving objects. When cars, ships, railway locomotives, etc. are in operation, the resistance caused by the compression of the air in front, friction between the surfaces on both sides and the air, and partial vacuum in the space behind the tail end. When operating against the wind, the wind force must also be added. In real life, free fall is also affected by air resistance, as its velocity, contact area, air density, and other factors can all affect the magnitude of air resistance. Reference materials.