spectrum
type: Concept
narrower: phonon spectrum
preferred label: طیف @fa

phonon spectrum
type: Concept
broader: phonon
broader: spectrum
preferred label: طیف فونون @fa
related: vibrational mode

phonon
type: Concept
narrower: phonon spectrum
preferred label: فونون @fa

vibrational mode
type: Concept
preferred label: مد ارتعاشی @fa