Nuclear Magnetic Resonance (NMR) is a spectroscopic technique that relies on the magnetic dipole moments of the atomic nuclei. Most nuclei have an intrinsic angular momentum (spin), which is given by their nucleon structure. When exposed to an outside magnetic field, the nuclei can be brought to precession, analogous to the motion of a spinning top. The precession frequency is proportional to the magnetic field applied. The details of the chemical structure lead to minor differences in the local field that each nucleus experiences, and, therefore, to slight variations in the precession frequency. These differences can be measured, and provide detailed insight into the molecular structure of the material.