I recently re-learned today that water is diamagnetic. I don't believe I totally understand why, but I will accept it as true.
However, I remember that in NMR of water, the protons of water form magnetic dipoles that align with the direction of the main magnetic field.
How can we say that water is diamagnetic (meaning that the bulk magnetization, $\mathbf{M}$, aligns opposite to the direction of the applied field), but the protons of water have a magnetic dipole moment that aligns with the direction of the applied field? Doesn't this seem somewhat contradictory?
Thank you for any and all help.