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Name: Elie
Status: student
Grade: 9-12
Location: CA
Country: USA
Date: Winter 2011-2012

How does a Ruben's Tube work? Why does the flame respond to sound? Can sound also work to move water?


Don't try this without responsible adult supervision:

This explains the Ruben Tube:

Doing a Google Search for "Ruben's Tube" also provides this video:

Essentially, sound waves are variations of air pressure. The air pressure variations concentrates or thins the pressure of propane gas in the slotted pipe. The propane gas pressure variations is manifested by tall or short flames along the pipe Revealing the standing audio/propane waves in the pipe.

Sincere regards, Mike Stewart

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