A Puddle Disappears The Day After It Rains Because

Looking down on a puddle, we see a collection of such waves moving together as one ripple in the water. When a raindrop touches down, imagine it as a “ding” to the water surface. This ding can be idealized as a packet of waves of all different sizes. After the raindrop falls, the packet’s waves are ready to begin their new life in the puddle.