These mysterious "fireworks" aren't lighting up the night sky — they're computer simulations from a recent paper on mixing fluids that don't want to mix.
Researchers mapped out how two immiscible fluids (two fluids that do not mix, like oil and water) with different viscosities can create "fingers" when they interact. They created different patterns by alternately injecting the fluids at the center of each "firework," allowing the fluids to spread out.
