- A tube containing cork dust or Polystyrene mini spheres, with a speaker on one end and a piston on the other.
- Speaker has optional frequencies.
- Moving the piston alters the length of the medium. When the length of the medium equals a multiple of half the wavelength a standing wave can be witnessed.
- Wireless remote control (Included).
- Altering the frequency of the emitted sound wave and the position of the piston demonstrates the wave equation .