Why do wheels appear to spin backwards? What is the stroboscopic effect? Fidget Spinner appears to spin backwards. Why?
This video shows why a fidget spinner appears to spin backwards. Spinning in reverse is called the stroboscopic or wagon wheel effect. It is also called aliasing. This shows why a fast spinning fidget spinner appears to suddenly reverse direction or spin backwards.
Premium Fidget Spinners can often look like they are spinning backwards as they have a high centrifugal spin ratio.