points: 1

So Cool. Shape of sound

Sand on a speaker-type thing, makes all kinds of neato shapes as the pitch rises.Not as boring as it sounds.

featuredcool

by ammonia33

submitted May 11th 2006

22 comments
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muchoworthytr_willk
not muchoworthy
comments (22)
Ughh Jonnycho, that annoying sound is what made the shapes. You couldn't do it with beats.

I can't even belive this is real. Its like a mathematical fractal in the sense that there is an order to the shapes. Crazy.
12 years ago
No, you didn't.

Anyways, I'm actually pretty impressed with that. Wonder what made them want to test it in the first place.
12 years ago
well, a similar experiement can be done using starch water (magic goo) in a petri dish that vibrates using sound waves, and what ends up happening is the same thing, you can see bumps form on the surface and it creates different patterns. It's very strange indeed.
12 years ago
it's a fairly common physics demonstration, usually not on such a scale, but some light sand in a tube and then passing various frequencies through it to see where the nodes are (i think the sand builds up at the wave nodes).. neat to see an extra dimension added though
12 years ago
damn that's badass.

too bad it's not under the "tits and ass" section which means hardly anyone will look at it since it seems there are only perverts and psychos that visit this site.

very cool though. i love it.
12 years ago
H-A-R-M-O-N-I-C R-E-S-O-N-A-N-C-E
12 years ago
Time well spent.
12 years ago
I dont want to brag, but I used to see exactly those kinds of fractal patterns in almost every surface when I was high on mushrooms or acid. Unfortunately my last trip which happened 2 years ago almost killed me and left me with PTSD for a while, and so I haven't touched the stuff since.
12 years ago
Nice play on words in the descrip.
12 years ago
so what makes you think that's bragging philasour? you're a junkie and probably have done nothing with your life.... so what in your testimony there should make me jealous?

once again, badass video!!!!
12 years ago
yah the sand would gather at the nodes because thats where there are no vibrations
im a recording engineer i wanna see what my teacher has to say about this when i show it tomorow

towards the higher frequencies where it starts to become less symmetrical would be spots where the sound isnt that flat of a frequency responce i guess
12 years ago
pretty cool! but how do i stop my ears bleeding?
12 years ago
Thats pretty cool, but just one piece of advice: don't use headphones when you watch this. Ouch.
12 years ago
Gee Mr. Wizard, what'ca doing today?
12 years ago
I had my sound cranked to max cuz I was listening to some Rammstein..then I try this...STUPID! I only turned it down when the shapes got to be really intricate..haha really cool though. Yeh, sound waves are nuts.
12 years ago
god made this happen...not sound waves.
stupid ingnant people.
12 years ago
^^ ha ha ha
12 years ago
play on words? I was dumbing it down for the people on this site, I always do...
12 years ago
I just thought it was one of those un-intentional things...believe it or not, we have some smart people on this site. The others just often kill any doubt we may have had on them being...intelligent.
12 years ago
<<towards the higher frequencies where it starts to become less symmetrical would be spots where the sound isnt that flat of a frequency responce>>

I would guess the break down in symmetry has more to do with the mechanics of the system, rather than the quality of the sound (if I read what you are saying correctly).

As the tone got higher and the wavelengths shorter, the non-symettry of the system became more apparent.

So the tarp or piece of board (or whatever the black flat this was) isn't perfecly symetric. It is thicker or stiffer in some areas than in others, or it is supported a little bit differently in different places.

These differences are too small make a difference at lower tones, but become apparent at higher tones.
12 years ago
It's obvious that the sound is being spread outward to escape the confines of the speaker and set out on it's ultimate goal, to gain equal rights.
12 years ago
it's obvious man-sewage eats poop.
12 years ago
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