In this video of a nuclear bomb detonation/mushroom cloud, a few peculiarities arise and I simply had a couple questions pertaining to observations in the animation:
Following the detonation, the surroundings become quite dark momentarily. Is this simply an artifact due to saturation or is there substantial blocking of light for a fraction of a second only?
On the left side (but not the right), a distinct set of ripples are temporarily observed. Are these shock waves or water boiling out of the air? Is there a particular reason for the asymmetry?