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The basic idea of NMR, resonant excitations between Zeeman split nuclear energy states, I understand. The semi-classical picture of precessing moments also makes some sense to me.

I think basically I am having trouble distinguishing between the influence of the nuclear and electron magnetic moments on NMR. In a recent course on magnetism, we were taught all about para/dia/ferromagnetism etc. The basic conclusion I now make is that magnetism is related to the moment of the electron itself, or due to its orbit, NOT the nucleus. But that is where I get lost. If magnetism is defined as the alignment of electronic or atomic moments, where do nuclear moments fit in? Aren't NMR experiments supposed to manipulate NUCLEAR moments?

I’m finding it hard to explain exactly what I’m having trouble with, but if anyone can see what I’m grasping at, or has an idea of a possible mistake in my understanding, please post. Maybe this will help me to explain what I think further.

Thanks in advance