Seeing Sound Waves

Submitted by: elHadji 8 years ago Science
/media/87933_sandsoundwaves.flv
One of the most fascinating thing I"ve ever seen. Tip: Turn down the volume a bit.
There are 60 comments:
Female 5,222
one of us one of us
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Female 838
I thought it was pretty cool. My cat however kinda went a little nuts with the higher pitched sounds
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Female 226
That was too cool. Wow.
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Female 156
Whoa, trippy.
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Male 29
Take a tab and you will see more than sound waves :P
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Male 838
On a note akin to what mogman45 was saying... it`s called crystal harmonics... the theory is, that everything matter in our world has a specific frequency and resonance to it that, if you play the sound loud enough, it almost immediately shatters. Sound waves are pretty powerful things.
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Female 17
That was freaking awesome!
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Male 730
way cool!
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Female 12
it`s called a chladni plate and every note, or pitch will make a different pattern.
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Female 2,289
That was cool
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Male 182
That was amazing.

And whoever posted this, thanks. I have a physics project about sound waves that I can incorporate this into. :D

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Male 1,036
BTW - did you see the "alien heads" about 1/2 way thru??
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Male 1,036
Awesome..luverly harmonics
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Female 91
you know, those kind of remind me of crop circles
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Male 36
wow
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Female 341
thats really cool. as nerdy as it sounds, i should totally show my physics teacher this... we`re studying waves, and this is WAY more interesting than what we`re doing right now...
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Male 224
The waves on the boards are the resonance frequencies of the board in its vibrational modes, not actually of the sound.

A certain frequency in the sound will excite the board at that frequency causing some portions to vibrate heavily (non-white sections since the salt is vibrated away) and vibrate non (white sections).

For futhur imagery, if you keep the board vibrating at a certain resonance frequency, the board will eventually crack at the white line locations just like how bending a paper clip back and forth will break it at the bending point.

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Female 15,763
I`ve seen this before! I love it.
Anybody seen the one with polyps that`s like, 45 minutes long?
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Female 1,120
I wonder what it was they were using.
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Female 4,225
That was cooleez
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Male 5,970
ah, i love science
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Female 19
Ouch.
The pain we suffer for science eh?
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Male 592
any other musicians out there who noticed that the changes seemed to correspond to the overtone overtone series?
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Female 87
awesome, minus the permanent ring in my ears.
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Male 170
There was something similar at the old science museum in Birmingham, but that one you had a bow to use on the edge of the plate. There was a square one and one shaped like a violin. Not as cool as this though!
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Male 1,024
amazing repost.
still cool.
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Female 35
See the circles it forms? Well, the higher it is, the more condensed the circles and the more there are. Could those be some kind of particle? Like air or something? Maybe its just my imagination. :P
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Male 62
The wonders of nature =)
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Male 34
This is awesome. Nice precis geometrical shapes.
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Male 3,296
that was cool
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Female 465
My housemate and I just tripped out to that... thanks for the heads up about the noise level
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Female 1,002
I`ve seen this before somewhere, but I still find it awesome.
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Female 464
Cool :3
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Male 2,616
I thought it said to turn UP the volume... mistake.
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Female 183
that was really neat, i wish you could wear some kind of goggles so that you could see soundwaves in real time instead of just standing waves
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Female 128
that was pretty neat.
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Female 297
pretty awesome....... started to twitch after a while though......
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Female 332
the higher a wave frequency, the closer together the crests and troughs are, so that`s why it`s more detailed the higher it gets.
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Female 1,395
I now have 40% hearing loss but i loved it =)
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Female 311
Wow! I loved that. :)
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Male 32
that REALLY hurt my ears, lol.
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Female 239
Very intersting! Science is cool!
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Male 695
anybody see similairities to crop circles?
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Female 127
The designs were cool but the noise hurt my ears I had to stop half way though and turn off the sound
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Male 219
Sexy hot.
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Male 153
this is basically a sheet of metal (?) vibrated by a speaker I believe; basically a more high-tech version of what is suggested by skittler.

and we`re looking at standing waves made by the sounds; these only happen at specific frequencies.

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Male 1,148
Wow that was cool... and very artsy =D
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Female 79
you need a tight strong piece of rubber (attached to a metal holder, similar to a coping saw shape) a flat piece of metal in the shape in the video, and light sand or something similar. then rub the rbbber bit hard up and down on the edge of the metal. voila, there ya go
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Female 79
they have this @ the boston science museum, c`est tres cool
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Male 1,091
I want to do this...anyone know if you can do it without spending too much money, or any? -what exactly do you need?
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Male 773
seems the higher it is the more complex the pattern...hmm
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Female 665
oh yeah, they had this at the museum in my town, it`s kind of cool and really fascinating to look at.
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Female 1,944
What exactly am I looking at?
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Male 111
i want to do this now
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Female 223
Wow, that was really interesting! I never really thought about what sound waves looked like, but apparently they are really neat.
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Male 395
wow! that`s amazing! harmonics are cool
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Male 339
I would`ve love to have seen it go back down quickly after that. Great post.
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Male 4,290
That was cool, they should have kept going though. Would have been interesting once it got past human hearing and it would just suddenly change in silence.
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Male 970
i know this one but in a pipe
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Male 1,455
Link: Seeing Sound Waves [Rate Link] - One of the most fascinating thing I`ve ever seen. Tip: Turn down the volume a bit.
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