I would have said "Poincaré map", as that's basically what this is, in some respect.

Whatever you want to call it, it's a very cool effect.. (edit: but thank you for providing some educational context! Off to Wikipedia I go..)

Also [wagon-wheel effect](http://en.wikipedia.org/wiki/Wagon-wheel_effect).

I mocked someone when he said he could see the effect in normal daylight with his eyes, but in fact I checked and could also see it sometimes! http://en.wikipedia.org/wiki/Wagon-wheel_effect#Truly_contin...