Visible Air
Kids' Zone · Interactive
- DimensionsSubject to on-site plan
- PresentationInteractive
- PricingQuoted by manufacture spec
Purpose & Scientific Principle
The exhibition uses multimedia and physical models to demonstrate the existence of air to children in the form of scientific experiments, allowing children to discover the basis for human survival.
How to Operate
The exhibits consist of LCD TVs, booths, spherical mirrors, cameras, LED point light sources, blade sets, operating props, etc.
A spherical mirror is fixed vertically at one end of the booth, and a camera, LED point light source and blade set are hidden at the other end. The LED point light source and blade set are placed at 2 times the focal length of the spherical mirror, and the camera is placed behind the blade to capture the image formed by the point light source. A heat source is installed in the booth near the spherical mirror, which is started and stopped by a button. A 32-inch TV is installed on the exhibition wall to play the video signal output by the camera in real time.
The audience presses the "light source" and "heating device" buttons successively to activate the light source, camera and heating device, and watch the flow of air through the screen. Audiences can also do heat-generating actions such as blowing air and rubbing hands in front of the spherical mirror, and can also see different air flow scenarios.
Schlieren photography is a photography technology that has gradually become known to everyone in recent years. Its principle is to use the disturbance of light waves by airflow to transform changes in airflow that cannot be seen by the naked eye into images that can be seen.
The schlieren method has the advantages of simple results, good imaging technology, and high precision. It converts changes in fluid density invisible to the human eye into light intensity information and records it, making the observation of the flow field more direct and vivid. In particular, the development of color schlieren technology makes the captured images more beautiful.
As the most commonly used optical measurement method, the schlieren method is widely used in fluid mechanics experiments and can be used to observe the boundary layer of airflow, combustion, shock waves, hot and cold convection in the gas, and the flow field in wind tunnels or water tunnels.
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