Why when we look at the turn of the wheel at high speed feeling is that the radios go back to? Do Giran the sp

Why when we look at the turn of the wheel at high speed feeling is that the radios go back to? Do Giran the spokes of a wheel al reves?

Why when we look at the turn of the wheel at high speed feeling is that the radios go back to? Do Giran the sp
Its just an illusion...................................
Reply:I'm guessing you mean such as watching a waggon wheel in a movie??


If so, the effect is caused by "stroboscoping". This occurs when the camera shutter captures a frame, but by the time it catches the next frame, the wheel has rotated, in the "backwards" case, a spoke position is captured such that the spoke appears to be behind the first frame. It depends on the camera shutter speed (24 frames/ second?) and the rotational speed of the wheel.


In industry in particular, a flashing light can be shone on a rotating wheel/ object, and the viewer sees a stationary picture of the wheel/ object. The flash rate just needs to match the RPM of the object to be looked at, either at the same rate, 1/2 the rate, 1/4 the rate etc. Best effect is when the object rotation and the flash rate are the same.


The light only illuminates the wheel/ object when it has come to exactly the same position its next time around. Increase the flash rate a little, and the whell will appear to go slowly backwards. Decrease the flash rate and the wheel will appear to rotater slowly forwards. Compre??
Reply:WTH??
Reply:Its just an illusion...................................

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