Is there not like a bunch of electronic components that would get twisted and ruined of they just kept spinning? Or is there a limit to how many rotations they can do before needing to counterspin?
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A scientist friend of mine, donating plasma(?), got curious about the centrifuge used to take out the desired stuff before putting the leftovers back in his vein. Why don’t the hoses get tangled with the first turn? The answer to *his* question is related to [this](https://en.wikipedia.org/wiki/Plate_trick), but it seems the answer to *your* question is cruder.
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