Why does the fan seem to spin backwards when it spins?
This is the reason that the wheel looks stationary, when the frequency of the fan's rotation is related to the maximum frequency that the human eye can tell
This is the reason that the wheel looks stationary, when the frequency of the fan's rotation is related to the maximum frequency that the human eye can tell.
Because the human eye to object displacement to distinguish between 0.1s, and 0.1s when the fan turn fast may turn 350 degrees, looks like reversal of 10 degrees, so add up, like upside down
