A Gyroscope Obtain a simple gyroscope. Rotate it at various speeds. If the gyroscope has a magnetic support try influencing the precessional frequency with a strong magnet. This frequency is sometimes called the Larmor frequency. The physicist engaged in spectroscopic studies usually expresses the spin of the electron as and its associated magnetic moment as called the Bohr Magneton, where m is the mass of the electron and c the velocity of light.
Magnetic nuclei behave like microscopic bar magnets.
Spins are randomly oriented in the absence of a magnetic field. There are two possible orientations for the protons of hydrogen nuclei in a magnetic field. They either lie with or against the field, as shown in Figure 23. We can think of these two orientations as corresponding to two energy levels. The energy difference between the levels is given by This equation states that the energy between these two states is related to the magnetic moment, m , and to the strength of the magnetic field, B .