Ruben's or Flame Tube
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.
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Update: June 2012