Bill.

I first noticed the odd effect with an accelerating wheel over 60 years ago when watching the flywheel on a then quite elderly tractor that was starting up. In spite of having known about it for so long, it is only recently that I started wondering why it happened. The only explanation I can think of is that although our vision seems smoothly continuous, it is in fact like a series of snapshots. From there I got to wondering if our perception of time could be the same. If you get the speed right you can see the effect at any time, especially if the wheel has spokes.

There never was nothing.