To achieve spectra like these, researchers must rotate the sample at various angles while positioned within the spectrometer’s magnets and exposed to a suitable microwave frequency. The measurement involves applying a magnetic field to the sample and then gradually increasing its strength across a range of values. Peaks appear in the resulting spectra whenever the magnetic field strength reaches a specific value that triggers an EPR transition. By analyzing these peaks, scientists can calculate the g-factor of the unpaired electrons in the sample.