+A phonon is a [quantum](/wiki/quantum) of vibrational [energy](/wiki/energy), an elementary excitation that ripples through a crystal's atomic lattice. It acts as a carrier of both [heat](/wiki/heat) and sound, a silent dance within matter.
+## See also
+- [Crystal](/wiki/crystal)
+- [Wave](/wiki/wave)
+- [Quasiparticle](/wiki/quasiparticle)