Ruben’s tube - standing waves that makes the audience stand up

When I studied physics this experiment of standing waves was done with sawdust in a tube. Somehow, the impression probably would been even greater if I had seen it with fire...

The classic physics experiment involving sound, a tube of propane and fire. Created for Flash Forward 2006, but useful in any case where you are not allowed to have fire. I push through the tube 449 Hz then higher frequencies, then some jazz and then some rock. This is real life sound visualization.

Thanks to http://evolvinginkansas.blogspot.com/