But the part that isn't blocked keeps moving past the edge, and it follows Huygens' principle, forming wavelets.

但是没有被阻挡的部分会一直移动到边缘之外，它遵循惠更斯原理，形成小波。

For example, let's apply Huygens' principle to a wave that moves past the edge of a flat object.

例如，让我们将惠更斯原理应用于 经过平面物体边缘的波。