Modifies a noun

• physic: Randi only takes on soft targets who have never read subatomic physics.

• particle: Electron: A negatively charged subatomic particle which circles the nucleus of the atom in a cloud.

• physics: Particle physics The link between the plaque and subatomic particle physics is a little more tenuous.

• phenomenon: It generalizes and supersedes classical physics, mainly in the realm of atomic and subatomic phenomena.

• world: The exploration of the atomic and subatomic world brought them in contact with a strange and unexpected reality.

• level: They are right there among other micro events, at atomic and subatomic levels, as distinct from macro events.