nuclear magnetic resonance definition

  • noun:
    • The absorption of electromagnetic radiation of a specific regularity by an atomic nucleus which positioned in a powerful magnetic area, utilized especially in spectroscopic scientific studies of molecular construction as well as in medication determine rates of kcalorie burning.
    • The absorption of electromagnetic radiation (radio waves), at a particular regularity, by an atomic nucleus placed in a very good magnetized industry; found in spectroscopy plus magnetic resonance imaging.
    • The specific consumption and re-emission of electromagnetic radiation at characteristic wavelengths by atomic nuclei in a magnetic industry. It is abbreviated NMR. The wavelength associated with radiation soaked up depends upon the sort of nucleus, the intensity associated with the magnetized area, in addition to local chemical environment where nucleus resides. This is the second impact (called the chemical shift), where atoms of specific elements in different chemical compounds show a unique resonance frequency, gives rise to the best utility with this phenomenon in examining the chemical construction of substances. Comparable aftereffects of the substance environment let the discrimination of different forms of residing structure by virtue of the various substance composition, thus permitting utilization of the sensation in health diagnostic devices, specifically for magnetic resonance imaging.
    • resonance of protons to radiation in a magnetic field

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