> "Since quantum mechanics dictates that angular momentum must be quantized, (....)"

Is the fact that angular momentum must be quantized a postulate of QM or is it derived from something more fundamental? I saw the plank length come up in the Dirac derivation.

I guess I'm looking for some sort of axiom. Something that doesn't follow from anything, but is the lowest level block of QM.

SpeteriusOP t1_j4rpx2l wroteReply to comment by

hairaminWhy does the existence of magnetic monopoles imply quantized electric charges?bySpeteriusGood meme 10/10.

Actually, it's not patronising. It feels good to know that Feynman and Co said those things.

I listened to a few detailed podcasts explaining the maths of QM, but I haven't done anything myself.