# A bit more fun with gravity waves

## More fun with gravity waves¶

Motion Clouds were defined in the origin to provide a simple parameterization for textures. Thus we used a simple unimodal, normal distribution (on the log-radial frequency space to be more precise). But the larger set of Random Phase Textures may provide some interesting examples, some of them can even be fun! This is the case of this simulation of the waves you may observe on the surface on the ocean.

Main features of gravitational waves are:

- longer waves travel faster (tsunami are fast and global, ripples are slow and local) - speed is
*linearly proportional*to wavelength - phase speed (following a wave's crest) is
**twice**as fast as group speed (following a group of waves).

More info about deep water waves : http://farside.ph.utexas.edu/teaching/336L/Fluidhtml/node122.html