
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.
在水面上撒上輕質顆粒,然后讓水流從一個小的高度入射到其表面。 在合適的條件下,粒子可能開始沿著水流向上運動。 研究并解釋這一現象。