Defects in two-dimensional materials (such as an atom-thick sheet of graphene) can dramatically alter the way that the surface ripples, even stopping the sheet in place like a freeze frame.

NASA's Curiosity rover photographed remnants of rippling waves in an ancient Martian lakebed, proving that the Red Planet had open water for longer in its history than previously thought.

A ripple tank can be used to measure and calculate frequency, wavelength and the speed of waves on the water's surface. A ripple tank is a transparent shallow tray of water with a light shining ...