>>105838731
>>105839170
The most trippy thing about phosphor trails is that if your eyes are still, your brain cannot tell if the afterglow is just your eye's natural persistence of vision, or something real. So your brain just filters it out. The trails are entirely invisible.
If you display some picture on a CRT, close your eyes, blank the display and simultaneously open your eyes, you can perceive the afterglow in it's full glory. It's shocking how long the afterglow is in reality, and equally shocking how much of it your brain just filters out usually.