4 ms·

Really, "phonon"?

• lightedman 8y ago
  Yes, really. It's a very important part of condensed matter physics.
• _Microft 8y ago
  Check this out, there's more of these quasi-particles: https://en.wikipedia.org/wiki/List_of_quasiparticles https://en.wikipedia.org/wiki/List_of_quasiparticles
• drjesusphd 8y ago
  Yes, vibrations in a lattice are quantized: they can only occur at a discrete set of frequencies and energies.