What is the frequency range of matter?

The frequency range of matter primarily pertains to the vibrations of atoms and molecules, which can be described in terms of their phonon frequencies. These frequencies typically range from terahertz (10^12 Hz) for lattice vibrations in solids, down to kilohertz (10^3 Hz) for molecular vibrations. Additionally, in quantum mechanics, matter can also be characterized by its wave-like properties, with associated frequencies determined by the energy levels of particles, such as electrons. Overall, the frequency range of matter spans a vast spectrum depending on the context and the specific properties being considered.