TITLE: Observations of a mushroom cloud
QUESTION [1 upvotes]: 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?

REPLY [0 votes]: the darkening of the sky was due to the exposure being adjusted on the camera to accomodate the fireball luminosity at its peak.
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