This is really neat. I just finished building an acoustic guitar, I'd love to see it's acoustic profile as compared to some others... Hmm, another project idea to investigate (although I'll prob have to settle for the old fashioned method).
Laser interferometry is not beyond the scope of an amateur. You just need a laser :-) A true one not a handheld pointer. Then you'd need some optics and a darkroom.
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[ 18.4 ms ] story [ 548 ms ] threadOldie, but still interesting.