Add Yahoo as a preferred source to see more of our stories on Google. The math of raindrops. Stefan Holm/shutterstock.com Have you ever taken a walk through the rain on a warm spring day and seen that ...

Have you ever taken a walk through the rain on a warm spring day and seen that perfect puddle? You know, the one where the raindrops seem to touch down at just the right pace, causing a dance of ...

Have you ever taken a walk through the rain on a warm spring day and seen that perfect puddle? You know, the one where the raindrops seem to touch down at just the right pace, causing a dance of ...

Rochester Institute of Technology provides funding as a member of The Conversation US. Have you ever taken a walk through the rain on a warm spring day and seen that perfect puddle? You know, the one ...