nuclear magnetic resonance


General Science


  • resonance of certain atomic nuclei which are exposed to radio waves in the presence of a magnetic field. The powerful magnetic field makes certain nuclei in molecules, especially those incorporating hydrogen-1 and carbon-13, orient themselves parallel to this external field. The RF energy is pulsed to make the nuclei oscillate between energy states, different frequencies provide varying levels of energy absorption, and such differences provide information about the structure of analyzed molecules. Observed, for instance, in nuclear magnetic resonance imaging.
  • An analytical technique utilizing nuclear magnetic resonance (1) for the determination of the structure and composition samples. Also called nuclear magnetic resonance spectroscopy.


  • noun a scanning technique using magnetic fields and radio waves which reveals abnormalities in soft tissue and body fluids.