Emission or propagation of acoustic waves (SOUND), ELECTROMAGNETIC ENERGY waves (such as LIGHT; RADIO WAVES; GAMMA RAYS; or X-RAYS), or a stream of subatomic particles (such as ELECTRONS; NEUTRONS; PROTONS; or ALPHA PARTICLES).
Radiations
D011871
Radiology
A specialty concerned with the use of x-ray and other forms of radiant energy in the diagnosis and treatment of disease.