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BreakfastBeerz t1_jeattwz wrote

Reply to comment by InjuryApart6808 in Humanoid robots using cameras for eyes will likely experience issues and accidents around spinning objects such as propellers, due to frame rates by scarronline

You mean like when you watch a fan or airplane propeller start up and the blades start to appear to slow down, then stop, then go backwards and then disappear all together?

https://www.youtube.com/watch?v=6IV_sa9_IxU

Take a guess at what point in the video the blades are turning at ~60 times per second

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InjuryApart6808 t1_jeauqfi wrote

You’re using a video captured by a camera. You’re actually proving my point. The camera is likely recording at 60 fps.

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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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