How to use this simulation

1. Scenario — Pick Single hole, Many holes, Sealed bottle, or Free fall. For many holes, choose 2–6 next to the tabs.
2. Play — Start the stream with Play. Pause or Reset anytime. The gauge icon sets animation speed.
3. Water & hole — Use the vertical slider to set water level. In Single hole / Sealed bottle, drag the hole on the tube.
4. Sealed bottle — Air follows PV = constant. Flow stops when P_gas + ρgh ≤ P_a. Open the lid to restore P_a.
5. Free fall — Effective gravity is ~0, so the hole stays dry. The background darkens as the tube falls.