D'oh! Quite interesting how the enormous heat of the fission first plasmarises (does this word even exist?) the surrounding air and then solid objects.
All those nice looking things we all know, I mean that cute fireball and the mushroom cloud are caused by that plasma touching the ground an dust sucked into the sky by the expanding and collapsing air...
Those things we all know are just side effects of the actual reaction on the nuclear level...
The whole destruction and the horror visions caused by that weapons are not even the actual and/or initial effect...
...
Nah, please shot me, I'm getting philosophical again.
Love those pictures.