Recent comments in /f/Showerthoughts

Fiberdonkey5 t1_jeaxk8c wrote

This can occur with the naked eye as well. Spinning motor shafts can often appear stationary when looking at them which is why there is a tool called a stroboscope that rapidly flashes light at variable speeds so you can visually see if the shaft has stopped spinning.

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InjuryApart6808 t1_jeavfky wrote

Not if something is spinning at the frame rate of the camera. Which is what the post is about. Then that object would appear stationary. Human eyes don’t do that, it would appear as a blur, and we would infer that the object is moving.

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