Spring showers have arrived in London, but I don’t really mind. I find the splat of raindrops falling on puddles a very comforting sound, one that I associate with childhood and the urge to immediately go and jump in all the puddles I can find. As a physicist who studies bubbles, I’ve got a scientific interest in these puddles too, because they sometimes have bubbles floating on the top. Raindrops are small—slightly less than a 10th of an inch in diameter, in a typical shower—but they often generate bubbles that can be half...

Source: Wall Street Journal March 12, 2020 13:41 UTC