Half a croissant, on a plate, with a sign in front of it saying '50c'
h a l f b a k e r y
There's no money in it.

idea: add, search, annotate, link, view, overview, recent, by name, random

meta: news, help, about, links, report a problem

account: browse anonymously, or get an account and write.

user:
pass:
register,


                                   

3D Chladni patterns

Cymatics eh? Who knew?
  (+1)
(+1)
  [vote for,
against]

It's always seemed to me that all of nature and every phenomena I've ever read about or experienced seems to follow a sequence much like a musical scale. Wavelengths of light, the periodic table of elements, the movements of atoms... everything.

It all seems to boil down to resonance at certain frequencies on an infinite scale. Sort of a fractally geometric alignment of factors at given oscillations.

I've been fascinated lately by Chladni patterns and there's something there that's tickling the back of my head but I can't quite make heads or tails of it yet. I thought to post; - Chladni Zen garden, Chladilatant, Frozen Chladni ice-cubes etc.

Thing is though, it's the two dimensionality of the demonstrations that are causing the tickle. If I could just visualize them in 3d I think that whatever burr I've got under my saddle might just work lose, and to this end I would like to see an experiment performed whereby Chladni patterns are induced in sand particles floating weightless in space.

I've searched to see if this has been plotted on a computer simulation somewhere but, no dice.

I'd also like to see if there is any correlation between these resonance patterns and prime numbers, (I can't be the first guy to wonder).

I know this is not really an invention, but until I isolate the tickle I won't be able to find the feather.


EM radiation as crystal catalyst EM_20radiation_20as_20crystal_20catalyst
shameless self promotion.
It's vaguely related because we're both talking about standing waves in 3d [xaviergisz, Aug 23 2010]

A 2d computer simulation. I would like to see this in a sphere, with depth. http://vimeo.com/1853656
[2 fries shy of a happy meal, Aug 23 2010]

Platonic solids in a vibrating sphere http://www.blazelabs.com/f-p-wave.asp
Buckminster Fuller and a student got vibrations to produce platonic solids in a sphere. [lawpoop, Aug 23 2010]

Radio waves could construct buildings in space http://www.newscien...dings-in-space.html
[xaviergisz, Aug 24 2010]

Seeing Sound http://www.seagraveinstruments.com/
2D array could be extended to 3D [csea, Aug 24 2010]

Large Chladni in 3D http://www.google.c...:0&biw=1435&bih=690
[MaxwellBuchanan, Aug 24 2010]

Too cool. Only 2D, but the coolest simulation I've come across yet. http://www.lewissyk...ewis_3&persistent=1
Mouse right for high pitch, mouse left for low pitch. [2 fries shy of a happy meal, Aug 28 2010]

[link]






       //I bet you could visualise this if you set up a standing wave in a perspex tube and throw in a bit of talc.//   

       I went to a science museum (in Launceston) recently where there were styrofoam balls in a horizontal perspex tube. The vistors are able to vary the sound frequency to observe the change of separation of the balls and hence the (half) wavelength between standing wave nodes.
xaviergisz, Aug 23 2010
  

       Interesting.
For a 3d demo would neutrally bouyant particles in solution act this way?
  

       Yes, you could do this in water. Although I think it would be better demonstrated in air using small spherical shells filled with helium.
xaviergisz, Aug 23 2010
  

       I read a long time back that somebody made flat metal patterns that were shape like skinned-out animal hides, then applied vibrations to them. They claimed to be able to reproduce the color patterns of many animals. I thought they should have worked with 3-D models.   

       You could do a 3-D surface if you made an iron model and coated it with magnetic particles. or something involving magnetism and particles, then applied vibrations.
baconbrain, Aug 24 2010
  

       // I would like to see an experiment performed whereby Chladni patterns are induced in sand particles //   

       There's a sand phenomenon that's only been noticed recently, where two different sizes of sand particles are mixed together and dribbled down like in an hourglass. When they roll down the slope of the sandpile below, they wind up sorting into layers.   

       How about you get two different types of sand, mix them up in a container of desired shape, then vibrate the container for a while. When the vibration stops, the sands may have sorted into patterns.   

       You could see the patterns by removing the sand layer by layer, maybe, or use an MRI machine.
baconbrain, Aug 24 2010
  

       wonder if you could build a sand castle like that.
FlyingToaster, Aug 24 2010
  

       How about Product: Audio Environment ?   

       I manufacture a system that is used to visualize and measure acoustic properties of rooms (and loudspeaker radiation patterns.) [link].   

       The link shows a 5x5 array of sound sensors; I've considered setting up a 5x5x5 or 7x7x7 array, but haven't yet got around to it.   

       You might google "room mode calculator" to explore the numerology of room dimensions.   

       (I considered sound-sensitive dust, but wasn't able to locate any!)
csea, Aug 24 2010
  

       Category - Science:Physics would seem to be closest.
8th of 7, Aug 24 2010
  

       For really big Chladni patterns in 3D, you can take a bag of galaxies, shake them out across the universe, and then say "ommmm" very loudly. See link for result.
MaxwellBuchanan, Aug 24 2010
  

       Ha!   

       Thanks for the links all. Looks like I've got my reading cut out for me.   
      
[annotate]
  


 

back: main index

business  computer  culture  fashion  food  halfbakery  home  other  product  public  science  sport  vehicle