鲁本斯焰管 Rubens' Tube

昨晚看了中央的科教频道的难得的科普节目，就是那个德国的节目，里面展示了神奇的鲁本斯焰管，觉得挺好玩的，今天一搜，一个结果都没有，用英文才搜到。这么有意思的玩意儿有必要介绍一下，遂键此文。
德国物理学家鲁本斯（Heinrich Rubens）站在四位巨人的肩膀上于1904发明出了鲁本斯焰管。
这根管两端是密封的，里面充满了可燃气体，那些小火苗在一排小洞上跳跃着。当扬声器挨上一端时，这些火苗会受控于扬声器，把声音的波形显示出来了。原理是，由于振动，管内高压的位置的孔会释放出更多的可燃气体，于是火焰就长高了，低压的地方就是低的。然后，你就可以去用尺子量波长了。
简单地翻了一下wiki的解释。 下面还有视频。 但不如节目里的好看。

I found the Rubens' Tube is interesting last night on a scientific show from Germany. So I share the fantastic pipe here.
The Rubens' Tube was invented by Heinrich Rubens in 1904.
"A length of pipe is perforated along the top and sealed at both ends - one seal is attached to a small speaker or frequency generator, the other to a supply of a flammable gas(propane tank). The pipe is filled with the gas, and the gas leaking from the perforations is lit. If a constant frequency is used, a standing wave can form within the tube. When the speaker is turned on, the standing wave will create higher and lower pressure points along the tube. Where there is higher pressure due to the sound waves, more gas will escape from the perforations in the tube, and the flames will be higher at those points. In these cases, it is possible to determine the wavelength by simply measuring with a ruler." From wiki.
Here's a video: