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Summary
| Description |
English: This picture shows cymatics, the study of wave phenomena, sound, and their visual representations. The patterns shown are created by a laser beam that is reflected by a small mirror onto a wall in my darkened basement. I directed two different coloured lasers, red and green, at the same mirror. The mirror is taped to a balloon which is stretched over the opening of a can which is placed on top of a speaker.
As the speaker plays notes, the sound waves vibrate the balloon, causing two-dimensional standing waves, meaning there are areas of high and low vibration. The mirror on the balloon represents a sample of the balloon's overall movement, as the mirror's angle is constantly shifted by the vibrations. So, any movement of the mirror will change the direction of the reflected beam. The movements of the reflected beam can trace out interesting patterns such as the Lissajous pattern shown here, which is formed by movement in two directions at different rates. Stable patterns are formed when the two frequencies are a whole number ratio. |
| Date | |
| Source | Own work |
| Author | Amanda.yuu |
Licensing
I, the copyright holder of this work, hereby publish it under the following license:
This file is licensed under the Creative Commons Attribution 4.0 International license.
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
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This image was uploaded as part of Wiki Science Competition 2019. |
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 03:53, 16 December 2019 | | 2,536 × 2,000 (992 KB) | Amanda.yuu | User created page with UploadWizard |
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