neutrons are a mean of subatomic wave
radio_waves is photons. s_band_microwave_radiation is wave_propagation. neutron_radiation is corpuscular_radiation. neutronium is neutron_matter. neutrons has spin fast_neutron is neutron. neutrons has about_as_much_mass_as_protons photons is both_particles_and_waves. beta_particle is subatomic_particle. neutron_star_matter is neutronium.