Ever wonder what happens when you drag a plate through a pool's water surface? Probably not. But this video presented by Physics Girl is worth the watch. In fact, so far more than 1.5 million viewers have tuned in. Check out her explanation of the vortexes that form, why they form, how they move, and what they are. Even if science isn't normally your cup of tea, you'll enjoy this charismatic explanation of a weird and interesting experiment. Then, impress your customers with this fun fact.