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 Another Non-Newtonian Liquid Experiment Two Vortex Rings Colliding What It Looks Like to Fire a Gun Underwater Large Hadron Collider Smashes Lead Ions at 1045 Trillion Electron-Volts, Sets New Record Watch 15,000 Volts Of Electricity Etch Lightning On Plywood Creating a Sun-Powered Death Ray