Mother Nature Blowing Bubbles

A phenomenon we've seen at the cabin quite frequently when it's raining is bubbles on the surface of the calm water in our natural swimming pool.

S.T. Thoroddsen of the National University of Singapore gave a presentation at the 2001 meeting of the American Physical Society:

The formation of bubbles on puddles is a common sight during heavy rain. Here we investigate the impact dynamics during bubble formation. High-speed video shows how the well-known Worthington crown closes above the crater to form the bubble. The closing bubble forms two jets one going up and the other down into the forming bubble, thus creating a toroidal cavity, which becomes unstable leaving a single bubble.

That's a very scientific explanation for such a natural process.

While all of these bubbles were forming on the calm water behind our cabin, there were absolutely none out front where the wind was rippling the water's surface. I wonder if that was part of his presentation.

Here's a video of the bubbles in action.

Have you ever noticed this trick of Mother Nature? -- Margy