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sakonigsberg t1_jebfrf8 wrote

This is relevant for us today. If your fluorescent lights or whatever are at a harmonic frequency with whatever is rotating, it will still look than it actually is moving.

It's called the stroboscopic effect

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Smiddy7465 t1_jebqw52 wrote

Came here to say this

Edit: I’m almost surprised I had to scroll this far too see it

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