DIY Rubens tubes!

W. writes – A Rubens Tube uses fire to visually demonstrate the compression effects of soundwaves. Think Winamp’s little oscilloscope, but on fire.
The construction of these tubes were documented by two people independently, and submitted simultaneously for Instructable.com’s Science Fair.

More!

• The Rubens’ Tube: Soundwaves in Fire! – Link.
• Wiimote Rubens Tube: Control Fire With Sound! (And a Nintendo Wiimote!) – Link.