Nigel Stanford's song Cymatics is named for the study of visible sound vibrations, and we see sound made visible in this music video. In fact, this video is a treasure trove of science, with ferrofluid, Chladni plates, Tesla coils, and a fiery Ruben's tube.
The latest installment of Veritasium is all about the "Pyro-Board." This snazzy contraption is a mesmerizing, planar take on the Rubens' tube – a perforated tube of gas – hooked up to a gas jet and a speaker – that can turn music into beautifully patterned, leaping flicks of fire.
The Rubens' Tube is a lit gas jet attached via a tube to a stereo speaker. When the speaker kicks into gear, the changes in pressure along the tube make the the flames spring up or die down in waves as the music plays. You may have seen a version of this if you've attended the concerts of bands who aren't concerned…