Fun with Vortex Rings in the Pool Create half-ring vortices in a pool by sliding a plate through water and adding food coloring to the ends. Facebook Prev Article Next Article Experiments Checkout these cool gadgets... Related Posts Magnet Gate Magnetic Wave Accelerator HUMAI Wants to Bring Humans Back from the Dead Using Artificial Intelligence Hydrophobic sand turns to goo in water and magically turns back to sand when dry Don’t Pour Molten Aluminum on Ice Bathing in 500 lbs of Liquid Glass Putty Make a Tiny Flamethrower with Oranges