I don't have anything to contribute as far as the topic, but I saw your avatar and thought for a fraction of a second that you had somehow taken one of my pics. Did you take an overexposed, out-of focus, very-close-up shot of a green laser dot on a wall? Here's my pics:
I made a series that appear to go together like an explosion, though, of course, they weren't taken in that order.
I just thought it was interesting, since the pic looks so similar to mine.