Chladni Plates Wednesday, Oct 3 2007
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January 5, 2008 at 5:12 am
Wow, really cool.
What are you using for particles, sand?
Can you make a video where you use higher frequencies? The designs were getting really complex and changing quite quickly as you went up in frequency.
Also, if you use a finer, smoother granule, maybe even round granules, will it behave more like a fluid so that the shapes can change and organize more quickly? This might be good because you’d be less likely to miss a shape if you’re changing the frequency so quickly that the particles don’t have a chance to organize before.
Really cool, thanks!
Mike
January 5, 2008 at 7:46 pm
Hi MIke,
First of all, notice that I was not the one who made this video - I just came across it in YouTube and felt that I should mention it here.
Having said that, My guess is that the material used is salt or sand. And I suspect there would be not much point in getting finer particles… - I might be wrong about it though.
There are many similar demos with fluids(especially non-Newtonian fluids like cornstarch suspensions) that are available from YouTube. Their dynamics is much more complicated than the demo above and consequently, they are more interesting.
You can see a popular science article on these kind of demos here(PDF file). Also see the AJP article on Chladni’s law.