- #1
CuriousBanker
- 190
- 24
Hello. If you blow across an open-open tube, according to the khan academy video, the molecules at both ends contract towards the middle, and then go back outward towards the edges, and the middle molecules don't move. Why? If you are blowing over let's say the top of the left open side, why don't all the molecules move to the right? What is causing the right side molecules to come inward?