https://doi.org/10.1351/goldbook.08375
Frequency at which nuclei with a nuclear spin precess (Larmor precession) around the direction of an external magnetic induction \(\boldsymbol{B}_{0}\). \(\boldsymbol{\omega}_{\rm{L}} = -\gamma \boldsymbol{B}_{0}\), where \(\gamma\) is the magnetogyric ratio of the nucleus.