Upstream Flow
Sprinkle light particles on a water surface. Then allow a water stream to be incident on the surface from a small height. Under certain conditions, the particles may begin to move up the stream. Investigate and explain this phenomenon.
在水面上撒上轻质颗粒,然后让水流从一个小的高度入射到其表面。 在合适的条件下,粒子可能开始沿着水流向上运动。 研究并解释这一现象。