@Qwave: This demo shows, how particles are the collapse of wave form — in quantum state.

Flipping a coin is a quantum function. When it spins ,it is head and tail both same time.it is wave function.

@Classical Physics: when it stops to head or tail, it is collapsed to particle state to observe.

@Black Holes. Does particles gets stretched to wave form here?

@Quantum Gravity: any impact on wave-particle state?
Debatable.