Vacuums are like magic. You press a button and POOF – they can suck up all kinds of stuff: crumbs, cat fur, even coconut shrimp. But how do these handy dandy machines work? We asked mechanical engineer Tiffani Teachey to help us find the answer.Got a question, but you’re not sure Hoover answer it? Send it to us at BrainsOn.org/contact, and we’ll find an answer that sweeps you off your feet!