Posted on 10/09/2021 7:43:19 PM PDT by BenLurkin
Phaser, anyone?
CC
[snip] 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. [/snip]
https://en.wikipedia.org/wiki/Phonon
The “hexagonal boron nitride” (hBN) they used in this experiment is great stuff for D-I-Y slick-coated bullets, much better than the old stand-by, molybdenum misulfide (AKA Moly).
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