"A radio-active body is, in fact, a body in course of transformation. Radio-activity is the expression of its never-ceasing leakage. Its change is necessarily an atomic disaggregation. Atoms which have lost anything are, from that very fact, new atoms." [Gustave Le Bon, The Evolution of Matter, page 181]

See Also

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Atomic Dissociation
Atomic Force
atomic mass
atomic number
atomic theory
ATOMIC THIRD SUBDIVISION
atomic triplet
atomic weight
atomic
Dispersion
Dissociation
Figure 13.06 - Atomic Subdivision
Force-Atomic
INTERATOMIC BOMBARDMENT
INTERATOMIC FOURTH SUBDIVISION
InterAtomic
intra-atomic energy
Law of Atomic Dissociation
Law of Atomic Pitch
Law of Oscillating Atomic Substances
Law of Pitch of Atomic Oscillation
Law of Variation of Atomic Oscillation by Electricity
Law of Variation of Atomic Oscillation by Sono-thermism
Law of Variation of Atomic Oscillation by Temperature
Law of Variation of Atomic Pitch by Electricity and Magnetism
Law of Variation of Atomic Pitch by Rad-energy
Law of Variation of Atomic Pitch by Temperature
Law of Variation of Pitch of Atomic Oscillation by Pressure
Radioactivity
subatomic
Subdivision
13.04 - Atomic Subdivision
3.14 - Vortex Theory of Atomic Motions