ScienceAugust 23, 2026

phonon

FO-non

Definition

A discrete unit or quantum of vibrational energy that propagates through a crystalline solid as a wave.

Etymology

Coined in 1932 by physicist Igor Tamm, the word is derived from the Greek 'phōnē' (meaning sound or voice) combined with the suffix '-on' to categorize it as a particle, analogous to terms like 'photon'.

In the news

In this article, phonons are described as the quantum packets of energy that carry heat through a material, which researchers successfully focused into specific ray-like patterns.

Scientists Observe Quantum Heat Waves at Room Temperature For The First Time

Read the full article ↗

ScienceAlert

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