are generally anisotropic, meaning the magnitude of the interactions depends on the orientation between the external magnetic field and the spin's environment (e.g., the molecule or crystal). Therefore, [...] rotation of the macroscopic crystal within the magnetic field. By controlled angular adjustment (e.g., by a goniometer), the interaction tensors can thus be measured and even be correlated with the crystallographic [...] crystallographic axes. In the case of polycriystalline or amorphpus samples all possible orientations are observed at the same time. This causes inhomogeneous broadening of the nuclear resonances and a so-called
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