1.   But Harry Rinker, president of Rinker Enterprises and publisher of a guide to collectibles prices, believes the speculative bubble is collapsing because the market has been flooded.

2.   But then the Internet bubble collapsed and even the prices of large technology companies began to fall.

3.   The technology bubble collapsed.

4.   Then, as the jet slows, the water pressure increases , and the bubble collapses within a millisecond, producing the snapping sound.