Optical Trapping part 2 !! 16x DVD laser makes a lit red dot in thin air. Part 2

Here is part two of the lit red dot in thin air I made by burning black plastic and remove the object while the laser is still on. If anyone knows what this phenomenon is, please post a comment :-))

Видео Optical Trapping part 2 !! 16x DVD laser makes a lit red dot in thin air. Part 2 канала Vidar Øierås