First thing is first. Some important points that have to be understood. First of all we have to understand what a node is and how sound travel.
NODE: This part of the wave is were no movement is experienced. An example can be a string. When the string is vibrated with a fixed end, the node is the part where it looks stiff.
SOUND DIFFUSION: Although a lot of people do not know about it but sound travels in waves
PHYSICS BEHIND IT:
1.This amazing thing is no magic. The thing that happened was that the sand was being accumulated in the nodes of the wave. also, by ajusting the frequency and amplitude better patterns will be developed.
Pretend to enjoy the vieo :D
Materials
Mechanical Wave Driver
2 Banana Plug cords
Silica Sand
PROCEDURE:
Instal the wave generator with the Chaldni Plates. This is amazing thing is no magic.
Disperse the plates with the silica sand. collected in the nodes of the wave (sound wave). By changing the frequency of generator, different frequencies.
You can save the resonating frequencies with the plate, by presing on the up and down button on the right top.
With variety of the frequencies, watch the amazing patterns.