Watch 350 Raindrops Paint A Double Rainbow 🌈 | 7 Satisfying Simulations, No Talking

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A dusk shower, one raindrop at a time. Every drop that crosses a rainbow ring lights that ring in its own colour, and after 350 drops a complete double rainbow stands over the field, red on the outside of the lower bow and reversed in the upper one. Then the other pictures, each finishing itself: a pyramid of 67 blocks hauled up a ramp and crowned in gold, 120 balls that wall themselves into 120 rooms, 250 balls that fall toward the middle and pack into one round planet, a 143-gram hanging mobile that settles level, 200 salmon that leap a fish ladder, and a greenhouse sealed with 101 panes of glass while 14 plants grow inside. No talking.

The number under each chapter title is the simulation's own count in that frame: raindrops landed, blocks placed, rooms built, balls locked into the planet, grams hung, salmon leaps that clear a lip (with the number of fish already at the top under it), panes of glass set.

What is real and what is simplified? The rainbow radii come from Descartes' minimum-deviation angles for one and two reflections inside a drop (which is why the upper bow has its colours reversed), but the spread of the colours is exaggerated so the bands are wide enough to see. The mobile is a real pivot-and-spring balance: every rod tips toward its heavier side and swings until the next piece evens it out. The rooms are true guillotine cuts, a wall through the contact point at right angles to the line between the two balls. The planet is real elastic collisions under a gravity that points to the centre and grows stronger with time. The pyramid, the salmon and the greenhouse run on fixed timetables so that each picture finishes on time; the workers, the fish and the panes are placed by plan, not by physics. The rules, the code and the sound are all original.