Some of our ideas on exhibits about acoustics
Below you could find some of our realized ideas on the experiments with sound.
You may have one of those or they can serve as a contribution to the new realization!
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A.2. Can we see sound?
The exhibit fitted with a computer and microphone allows to “see” the sound wave on the screen of a digital oscilloscope. While emitting sound to the microphone, the visitors are able to observe parameters of the recorded sound.
A.4. Sound in vacuum
Travel of sound largely depends on the environment it is supposed to pass through. The exhibit presents the lack of the possibility of the sound spread in vaccum – it is fitted with a vacuum dome covering a siren.
A.6. Symphony of physics
This stand is constructed of pipes with ends open on both sides and is designed to resemble a piano. Hitting one end causes a sound emission on the other, and a complete scale can be played on this “piano.” The didactic content involves description of the standing wave and how it is created.
A.8. Test your ears
A two-space, Leap Motion fitted exhibit which allows to measure the human hearing range.
A stand concerning ultrasound, at which visitors find out about examples of ultrasound occurence in nature. Their task here is to draw a shape similar to the one displayed on the screen using reflected ultrasound as in animal echolocation
A.12. Doppler’s effect
Here the Doppler’s effect, the phenomenon widely known in physics, is explained. The source of sound is placed on a revolving arm whose frequency can be controlled by the visitors.
A.14. Speed of sound
This built of 200 meters of pipe exhibit is to teach visitors about the notion of the speed of sound and the delays observed when ittravels longer distances.
A.16. Paint with sound
The stand presents Lissajous curves which come to being as a result of laser light and sound wave combination. A set of two speakers serves as a sound source.
A.18. Oscillating sound
The exhibit is constructed of a membrane stretched over a speaker and a stroboscope light. Its aim is to demonstrate different types of membrane’s oscillation which depend on the frequency of the emitted sound, which visitors can control with knobs.
A.20 Painting with a Violin
Here the occurence of the standing wave is the depicted with a particular emphasis on nodes and anti-nodes. Depending on the frequency of the sound nodes and antinodes change their position on the violinresembling surface, allowing visitors to observe changing pictures in the sand.
A.22. Air Missile
The stand enabling to shoot a target, such as a piramid made of empty cans, with an air missile is supposed to demonstate what is not a soundwave.