Objective: Demonstrate and compare nuclear magnetic resonance in glycerine, polystyrene and Teflon
Nuclear magnetic resonance (NMR) is based on the energy absorption by substances with nuclear magnetism, which are inside an external magnetic field produced by a DC source. The energy is absorbed from a high-frequency AC-generated field which is fed in perpendicular to the field from the DC source. If the frequency of the alternating field is equal to the resonant frequency, the impedance of the transmitting coil filled with the test material changes in accordance with a resonance curve and a peak will be visible on an oscilloscope screen. Suitable materials for this include glycerine, polystyrene and Teflon, whereby the magnetic moment of 1H or 19F nuclei is used.
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