I have no idea what this was, but it is not a genuine cloud chamber. First of all, cloud chambers do not have 'winds' blowing clouds in them. Second, they do not have what looks like dirt in them. I doubt this was in a Los Alamos lab.

I have no idea what this was, but it is not a genuine cloud chamber. First of all, cloud chambers do not have 'winds' blowing clouds in them. Second, they do not have what looks like dirt in them.