ripples
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The Shockwaves On A Rain-Soaked Window Screen Are Wonderfully Unique
Throw a pebble into a still pond, and the shockwaves from the disturbance will ripple out in all directions in nearly perfect concentric circles. But disturb the fine mesh of a window screen that’s soaked with rain or morning dew, and the shockwave will ripple out with a unique, four-pointed star pattern.