Acoustics
Acoustic LevitationSound can actually levitate physical objects! This project is part of a demonstration designed for use with the Alaska Summer Research Academy in the Cool Vibrations module. A classic example of tube resonance, this system illustrates an extreme case of standing waves.
A tweeter (small speaker used for high frequencies) pushes air back and forth from the bottom end of the tube. At the right frequency, the pressure waves reflected off the metal plug at the other end of the tube cohere with the original pressure waves, creating a wave that seemingly "stands" in place. One can model this vibrating system as a string held at both ends. An excellent description of the physics can be found here. More tests and videos are to come, please enjoy! |
|
Oobleck!Ever heard of oobleck? Its a non-newtonian fluid! "Non-newtownian" means that the shear stress and shear strain aren't linearly related. In layman's terms, this stuff becomes MORE viscous the MORE stress that is applied to it.
This video depicts an interesting phenomenon, a Faraday wave driven by vibrations coming from a speaker. At the right depth of fluid, frequency, and amplitude, Faraday wave patterns resonate into strange structures. Enjoy! |
|
Frankenwoofer
Coming soon! Thank you for your patience.
Vocal Harmonics Project
Coming soon! Thank you for your patience.
Conductive Rubber Bass Guitar
Coming soon! Thank you for your patience.