Why do car wheels look like they are spinning backwards when they turn at high rates?
Of course any movie that you see is just a series of still images, and if you watch a movie then you can see frame-rate effects which are a form of the strobe effect. If you go out into the real world and watch wheels turning in sunlight they never turn backwards. If you go out at night and see them by the light of street lights, maybe you can see them turn backwards if they are illuminated by a light that is on an AC circuit. I don’t agree with the idea that your eyes take pictures like a camera. The eyes are using electro chemical processes in a continuous manner. That is one reason why we can see the illusion of the spinning circle of dots. As our eyes use up the particular chemical for a color, the dots change color and then disappear. But this process is a display of supply and demand within the rods and cones of the eyes. If we run out of the supply needed to produce a color signal, the brain will not receive that signal and the color will disappear. This process is continuous. I
