Cars Ceiling Fan Why Do Car Wheels/ceiling Fans Seem To Rotate Aniclockwise When Seen Against A Light Reflection Sometimes ?

Why do car wheels/ceiling fans seem to rotate aniclockwise when seen against a light reflection sometimes ? - cars ceiling fan

Stroboscopic effect. This happens when the source of light flashes. If the frequency rotationg object and advantage of the light source, the rotating object is stationary. This effect is used in the news paper to read messages typographical errors in printed material that goes very fast. If the different frequencies, the object is rotating at a speed that is different from the two frequencies to turn. (Source frequency - freq * object number of leaves). If the frequency of the light source is more than the object, it seems that the counter-clockwise rotation under certain conditions. It depends on the number of leaves.