A couple of months ago, I wrote a post going over Schilieron Flow Visualization, a method used to detect and visualize waves emitted from sound. NPR gave us a detailed and incredibly informative look into how it was all done.
Now, it looks like there’s a way to capture those waves through a lens yourself. A user on Instructables named jlansey recently put up a tutorial going over how you can make your own setup on a $9 budget (…assuming you already have a camera, of course).
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