Nuclear Magnetic Resonance (NMR) Spectroscopy.

The article presents information on Nuclear magnetic resonance (NMR) spectroscopy. The goal of nuclear magnetic resonance, NMR, is to study molecular structures, molecular motion, and various chemical characteristics. This kind of information can be found in the nuclear magnetic resonance spectrum. The NMR spectrum reveals the Larmor frequencies of the nuclei in a sample. The sum of the precessing magnetic moments of nuclei in a static magnetic field, that is, the macroscopic magnetic moment M, lies along the z-axis (the direction of the magnetic field). In order to be able to measure M to obtain an NMR spectrum, it is necessary to rotate M in such a way that an observable component is achieved along, say, y-axis.