Rubens' Flaming Tube

What's up people? I was surfing the net and i came across a classic physics experiment. The experiment is called Rubens' flaming tube. Seems normal eh? But no! Its actually a mind boggling, cool experiment. Let me tell its background. In 1904, using these two important discoveries, Heinrich Rubens, whom this experiment is named after, took a 4-metre-long tube and drilled 200 small holes into it at 2 centimeter intervals, and filled it with a flammable gas. After lighting the gas (whose flames all rose to near-equal heights), he noted that a sound produced at one end of the tube would create a standing wave, equivalent to the wavelength of the sound being made. 

The phenomenon can be explained since the time averaged pressure is equal at all points of the tube, it is not straightforward to explain the different flame heights. The flame height is proportional to the gas flow as shown in the figure. Based on Bernoulli's principle, the gas flow is proportional to the square root of the pressure difference between the inside and outside of the tube. This is shown in the figure for a tube without standing sound wave. Based on this argument, the flame height depends non-linearly on the local, time-dependent pressure. The time average of the flow is reduced at the points with oscillating pressure and thus flames are lower.

Hey! Enough of chit chatting. How about we observe the experiment done by the Mythbusters:)

Enjoyy:)