franco_vazza, 10 months ago Now, what has this to do with the formation of a network of light rays at the bottom of the pool? Well, the process is basically the same, if you assume the vertical direction in the pool is the "time" in a cosmological model. At the top of the water surface are tiny random ripples, with a correlation length related to the dynamics of water. These tiny ripples cause initially parallel lightbeams to proceed with some angle, until they cross ("particle collision").
Now, what has this to do with the formation of a network of light rays at the bottom of the pool?
Well, the process is basically the same, if you assume the vertical direction in the pool is the "time" in a cosmological model.
At the top of the water surface are tiny random ripples, with a correlation length related to the dynamics of water.
These tiny ripples cause initially parallel lightbeams to proceed with some angle, until they cross ("particle collision").