phonon

Noun

Meaning

(physics) The quantum of acoustic or vibrational energy (sound), considered a discrete particle rather than a wave.

(linguistics) A unit of phonemics.

Phrases with the word

Examples

Definition Quantum electrodynamics (QED) has one electron field and one photon field; quantum chromodynamics (QCD) has one field for each type of quark ; and, in condensed matter, there is an atomic displacement field that gives rise to phonon particles. Source: Internet

However, the general correlation between electrical and thermal conductance does not hold for other materials, due to the increased importance of phonon carriers for heat in non-metals. Source: Internet

Except for high quality crystals at low temperatures, the phonon mean free path is not reduced significantly at higher temperatures. Source: Internet

An alternative etymology is from φέρειν φόνον main, pherein phonon, "to bring (or cause) death". Source: Internet

Thermal conductivity is usually described by the Boltzmann equation with the relaxation time approximation in which phonon scattering is a limiting factor. Source: Internet

The two most important anharmonic effects are the thermal expansion and the phonon thermal conductivity. Source: Internet

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