Fysikshow, Denmark's favorite physics education team, has taken the Rubin's tube, flammable gas piped through a line of holes to create a line of flames, and adapted it to a 2D plane. Their invention, enticingly named The Pyroboard, emits a dance of fire synced to low base music- a VJ's hotdream. It is outfitted with 2500 holes which light up when the audio pumped through the air hits a standing wave, which introduces a vibration into the air such that the flowrate of the gas peaks the height of the flames at points where the pressure is constant, called nodes. The effect (best demonstrated at the 3:38 mark) is mesmerizing.
For more of these tasty Danish experiments: www.youtube.com/Fysikshow
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