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Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas

AMA | October 2024

12210.097 - 12228.873 Sean Carroll

They're separated by an amount equal to one. All of these numbers are secretly multiplied by Planck's constant h-bar, but we set h-bar equal to one so we don't notice. So spin one half, the actual amount of spin is one half times h-bar, we just say a half. So it could be spin plus a half, i.e. spin up, or it could be spin minus a half.

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