In addition to the mention of cymatics, I wish the article had gone into the technical details - like, was the golden sand all simulated, or did they film any r

In addition to the mention of cymatics, I wish the article had gone into the technical details - like, was the golden sand all simulated, or did they film any real particles; what software they used, physics engine, etc. https://en.wikipedia.org/wiki/Cymatics https://en.wikipedia.org/wiki/Cymatics