I am extremely confused when it comes to particle-wave duality outside of the electromagnetic spectrum and quantum world. Are sound waves strictly waves or do they have "particle"-like aspects? I understand that every particle has its own wave. Does this apply to every wave having a particle? Because it seems that any wave that requires a medium is strictly transfer of energy. Oh, maybe the energy is what makes up the particle. Haha E=mc^2. Did I just answer my own question or am I disillusion? EDIT: Also, can radio waves, because they are so large, actually have a particle to be "found?" Thanks!