You’ve probably seen the tweet where the guy uses a violin bow on a metal plate and a bunch of couscous magically dances itself into strange and mysterious patterns.

 

Check out the video at the top of the page to see the explanation for WHY it happens, which is actually quite straightforward. What happens is the bow makes the plate resonate in…Ah, just watch it, then bore everyone down the pub with how it works. You’re welcome.