radioactivity in Bulgarian

Spontaneous emission of ionizing radiation as a consequence of a nuclear reaction, or directly from the breakdown of an unstable nucleus.

Spontaneous emission of ionizing radiation as a consequence of a nuclear reaction, or directly from the breakdown of an unstable nucleus.

The radiation so emitted; including gamma rays, alpha particles, neutrons, electrons, positrons, etc.

The radiation so emitted; including gamma rays, alpha particles, neutrons, electrons, positrons, etc.