1. Different applications: THz band can cover the characteristic spectra of semiconductors, plasmas, organisms and biomacromolecules. Using this frequency band can deepen and expand human understanding of some basic scientific problems in physics, chemistry, astronomy, informatics and life sciences. Magnetic rotation is widely used in AC motors, measuring instruments and other equipment.

2. Different properties: terahertz is one of the fluctuation frequency units, also known as terahertz or terahertz. Magnetic spin is a kind of magnetic field in which the magnetic induction vector rotates at a fixed frequency in space.