Question

if a stationary obserber watched the wheel of a moving cycle ,then which spoked will apear him move distinct.

Answer 1

That’s because under these conditions “continuous motion” is, in essence an illusion.

Every time you think you are seeing something in motion, what you areactually seeing is a series of still images played close enough together that your brain stitches them into a continuous scene.

The stroboscopic effect occurs when an object’s motion coincides with the sampling rate.

Consider, for a moment, that your recording device has a sampling rate of 20 frames per second. If you look at a fan blade that is rotating at 20 rotations a second.

Answer 2

cycle's tire's spoke