Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas
AMA | October 2024
Sean Carroll
It's not quite a vector because it's spin one half rather than spin one. But it could be spin one half, I should say. But it's kind of like a vector that has a length. But then when you measure it, you're projecting it onto some axis. So if you have a spin one half particle, the total spin, and we simply say spin one half, but there are two possible projections.
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