Sound experiment

We had a student do an individual project on Chladni plates so I made up a few with different shapes & sizes in acrylic of different thicknesses to fit on our vibration generators just like Dr Js. Only problem now is that a five minute demo tends to go on for at least an hour!
 
We had a student do an individual project on Chladni plates so I made up a few with different shapes & sizes in acrylic of different thicknesses to fit on our vibration generators just like Dr Js. Only problem now is that a five minute demo tends to go on for at least an hour!
That's good!
 
Sand is the way to go, the colour is a much better contrast than salt. At my last school we kept it in a separate container for the practical - a dredger with a handle (I just had to google to find the name of it!)
 
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