The reason the styrofoam pieces form a series of walls rather than simple humps has to do with the way the air in the tube moves around those pieces...Vortices form around each piece, and the most stable places for another piece are either in the same plane as the first, or a certain distance away. Google 'Kundt's Tube Striations' since I couldn't post the article link...Andrade was the original explainer from what I've read
The reason the styrofoam pieces form a series of walls rather than simple humps has to do with the way the air in the tube moves around those pieces...Vortices form around each piece, and the most stable places for another piece are either in the same plane as the first, or a certain distance away.
Google 'Kundt's Tube Striations' since I couldn't post the article link...Andrade was the original explainer from what I've read
Wow