There were a couple effects like that up and down on the corner, I was lucky enough to capture one of them but couldn't get both to show in the camera. I really like these prism effects too - you've probably noticed.
There are a lot of interesting qualities about light. Is it a particle or wave? The double-slit experiment always intrigued me as well.
Absolutely! It can give you a regular headache when you really think about delayed choice and quantum eraser experiments!!!