Code: 3D30.50
Demo Title: Ruben's/Flame Tube
Subject: Resonance Cavities
Description: A length of pipe is perforated along the top and sealed at both ends - one seal is attached to a small speaker or frequency generator, the other to a supply of a flammable gas (propane tank). The pipe is filled with the gas, and the gas leaking from the holes is lit. If a constant frequency is used, a standing wave can form with the flames.
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