Pyro Board, A Fascinating Demonstration of Sound Waves Interacting With Sound Pressure Using Fire

Veritasium host Derek Muller gets a good look at the Pyro Board created by YouTube channel Fysikshow. Pyro Board is essentially a 2D version of a Rubens’ tube, a physics demonstration of standing waves using flammable gas.

The pressure variations due to the sound waves affect the flow rate of flammable gas from the holes in the Pyro Board and therefore affect the height and colour of flames. This is interesting for visualizing standing wave patterns and simply awesome to watch when put to music.