The Rubens' Flame Tube: Seeing Sound Through Fire

A speaker pumps sound waves into a long pipe, which for particular frequencies creates standing waves (resonance). Propane gas is pumped into the pipe, and leaks out a series of holes drilled on the top side, creating a wall of flame. When a standing wave is present inside the tube, the height of the flames reveals the unseen nodes and antinodes inside the pipe.

Category:

Science & Technology

Tags:

• resonance
• standing waves
• Rubens'
• Flame
• Tube
• musical instruments
• sound
• acoustics
• node
• antinode
• fire

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