What is spin in subatomic particles

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E.g. electrons. From other posts and Wikipedia, it apparently isn't the speed at which the particles rotate, so what the heck is it?
 
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There have been numerous threads here, some of them probably even on-going. So read those posts and ask questions there. A new thread is no longer necessary.
 
I have read them. Topics and subsequent replies deal with what particles have what spin, and why they have that particular spin value. None of them actually asks the question : what is spin.
 
You already posted on another thread. I'll post there.
 
h1010134 said:
I have read them. Topics and subsequent replies deal with what particles have what spin, and why they have that particular spin value. None of them actually asks the question : what is spin.

Here are a few that (especially if you follow the links in them) come close. If you've read them, you may be able to form a question that will get a more satisfying answer.
https://www.physicsforums.com/showthread.php?t=630057&highlight=spin
https://www.physicsforums.com/showthread.php?t=629181&highlight=spin
https://www.physicsforums.com/showthread.php?t=615516&highlight=spin
 
Okay... thanks for the links. Will read them.
 

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