When a container with a layer of sugar water placed above a layer of salt water is illuminated, a distinctive fingering pattern may be seen in the projected shadow. Investigate the phenomenon and its dependence on the relevant parameters.
当照明一个装有一层糖水铺在一层盐水上的容器时，我们可能在投射的背光处看到一种独特的指纹形图案。研究这个现象和与相关参量的依赖性。