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Optical illusion causes blades cutting vegetables at high speed to look like they're only slowly spinning [1]

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Date: 2024-06-01  

The wagon-wheel effect, here caused by videotaping a high-speed veggie-chopping machine, makes it look like the blade are only slowly moving, even as cucumber slices fly out at a scary-fast speed. This stroboscopic phenomenon is also commonly seen on footage of cars and airplane propellers, captured at odd intervals by the camera's shutter.

Luckily, looking at this machine in real life would allow one to see how fast it's spinning.

Still, I wouldn't feel comfortable standing anywhere near this machine. The fate of the cucumber tells me all I need to know.

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[1] Url: https://boingboing.net/2024/06/01/optical-illusion-causes-blades-cutting-vegatables-at-high-speed-to-look-like-they-are-slowly-spinning.html

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