Apparently, in the olden days, that used to happen quite a lot in labs. Benchtop centrifuges didn’t always have lids, or weren’t always used with them. Fluorescent strip lights in the lab and the centrifuge spinning at just the right speed would make it look stationary…..
Goodbye fingertips!
I still have all my fingers because my benchtop microfuge has a lid, I’m rubbish / too lazy to balance it properly so it usually rattles around the bench, and I bought it specifically because it has a ring of coloured LED’s around the spinny bit when it’s switched on.
Safety first kids!