The Mystery of Vacuum
- In stock with stable lead times — single units or complete sets
- Size, appearance and interaction can be adapted to the museum’s theme
- For science museums, campus science rooms, community science centers and mobile science museums
- Export packing and overseas on-site installation support
1. Content:
This exhibition mainly demonstrates three phenomena in vacuum.
Phenomenon 1: The audience stands directly in front of the exhibits. When the audience presses the button, the vacuum pump under the exhibits platform starts working. At this point, the audience can notice that although the electric fan continues to rotate continuously, the toy windmill in front of it slows down until it stops. After a few seconds of pause, the vacuum pump begins to inflate the vacuum tank, and the rotation of the toy windmill starts from scratch, changing from slow to fast,
Phenomenon 2: The audience stands directly in front of the exhibits. When the audience presses the button, the vacuum pump under the exhibits platform starts working. At this time, the audience can notice that the alarm sound that is ringing gradually decreases; Although the bell kept ringing on its body, the tinkling sound continued to weaken until "all sounds were silent". After a few seconds of pause, the vacuum pump begins to inflate the vacuum tank, and the electric bell will drive away the panic caused by silence and return to noise.
Phenomenon 3: The audience stands directly in front of the exhibits. When the audience presses the button, the vacuum pump under the exhibits platform starts working. At this time, the audience can notice that the balloon slowly bulges. After pausing in the vacuum state for a few seconds, the vacuum pump began to inflate into the vacuum tank, and the balloon slowly blew up again.
2. Principle:
V vacuum
The meaning of vacuum refers to the state of gas below one atmospheric pressure in a given space, which is a physical phenomenon.
Sound cannot propagate in a vacuum
Sound propagates through media, including gases, liquids, and solids. Sound cannot propagate in a vacuum.
3. Purpose:
This exhibition includes three sets of experiments, comparing electric bells, windmills, and balloons in air and vacuum to introduce the basic conditions for wind formation and the scientific principles of sound propagation to the audience. In a vacuum environment, wind cannot form and sound is difficult to propagate.