Swans on Tea

Comment from 5614
Time: April 14, 2008, 7:10 am

Dude!! Why do we use slinkies and strings when you can do this!?

I’m suprised at quite how long it kept burning after he turned the tap off.

Also during the “more energetic” music (2:05 to 2:15), it’s strange how there’s a gap in the flames towards the right end of the tube. I’d guess that’s where the modal range of frequencies have nodes. As in, at a guess, there’s a lot of bass in that song, but as it’s a song, and not a monotone, there’s a range of bass frequencies. If each of these close-in-frequency waves set up a standing wave, there would be a series of standing waves with nodes very close to each other. This could cause an extended region of relatively low pressure (i.e. no flames). In other areas of the tube the less-bass waves cause regions of higher pressure. Ha, that’s a hand waving guess if I ever I made one! hmm, anyone want to comment or offer their own explanation?

Comment from ecoli
Time: April 14, 2008, 5:00 pm

I was thinking a similar thing while watching, 5614. I noticed that the high hat of the jazz piece seems to be represented towards the left side of the tube. Could it be that, because this is a standing wave, you get constructive interference here? How would that coorespond to the frequency of the hi-hat?

Comment from iNow
Time: June 3, 2008, 11:04 am

Here’s a similiar demo, but 2D and with salt. Very cool.

http://www.youtube.com/watch?v=Qf0t4qIVWF4

Comment from swansont
Time: June 3, 2008, 2:33 pm

Man, you’re killin’ me. I already had that tagged for a post in case “current events” got slow.