👉 A phonon is a fundamental particle that is not massless, i.e., it does not have the property of moving in all directions. Phonons are particles with characteristic frequencies and wavelengths that can exist at any temperature. They play an important role in many physical phenomena such as sound waves, heat transfer, and vibrations. Phonons are characterized by their low-energy states, which correspond to phonon modes. These modes have a specific frequency associated with them, and they propagate through matter according to
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What is the definition of Phonon? 🙋
👉 In physics, a phonon is a type of electromagnetic wave that occurs in a material when its molecules are vibrating at a frequency above the sound frequency. These vibrations can be thought of as particles moving through space at a constant speed and direction perpendicular to their path. Phonons are essential for the propagation of light, sound, and other types of electromagnetic waves. They play a crucial role in many physical processes such as quantum mechanics, atomic spectroscopy, and materials science.
