nonelectromagnetic radiation

nonelectromagnetic radiation

[‚nän·i‚lek·trə·mag¦ned·ik ‚rād·ē′ā·shən]
(physics)
A stream of particles other than photons, such as neutrinos, electrons, positrons, protons, neutrons, or alpha particles (all of which also have wave properties, such as diffraction), or of waves other than electromagnetic waves, such as sound waves (which also have particle properties, for example, as phonons in the case of sound).