Science

What the heck is a “phonon”?

https://graptechpedia.com/5418/science/phonons-may-have-mass-and-perhaps-negative-gravity-according-to-researchers/

Definition from Wikipedia:

A Phonon is the quantum mechanical description of an elementary vibrational motion in which a lattice of atoms or molecules uniformly oscillates at a single frequency. In classical mechanics this designates a normal mode of vibration. Normal modes are important because any arbitrary lattice vibration can be considered to be a superposition of these elementary vibration modes (cf. Fourier analysis). While normal modes are wave-like phenomena in classical mechanics, phonons have particle-like properties too, in a way related to the wave–particle duality of quantum mechanics.

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