What is decay?

  • (noun): An inferior state resulting from the process of decaying.
    Example: "The corpse was in an advanced state of decay"; "the house had fallen into a serious state of decay and disrepair"
    See also — Additional definitions below

Some articles on decay, decays:

Cromium - Characteristics - Isotopes
53Cr is the radiogenic decay product of 53Mn ... ratio that suggests Mn-Cr isotopic composition must result from in-situ decay of 53Mn in differentiated planetary bodies ... The primary decay mode before the most abundant stable isotope, 52Cr, is electron capture and the primary mode after is beta decay ...
List of B Mesons
... and parity (JP) Rest mass (MeV/c2) S C B' Mean lifetime (s) Commonly decays to B meson B+ B− ub +1 1⁄2 0− 5,279.15±0.31 0 ... +1 1.638±0.011×10−12 See B ...
Strontium-90 - Radioactivity
90Sr undergoes β− decay with a half-life of 28.79 years and a decay energy of 0.546 MeV distributed to an electron, an anti-neutrino, and the yttrium isotope 90Y ... pure beta source the gamma photon emission from the decay of 90Y is so infrequent that it can normally be ignored ...
Alpha-particle - Sources of Alpha Particles - Alpha Decay
... The most well-known source of alpha particles is alpha decay of heavier (> 106 u atomic weight) atoms ... When an atom emits an alpha particle in alpha decay, the atom's mass number decreases by four due to the loss of the four nucleons in the alpha particle ... are when uranium becomes thorium, or radium becomes radon gas, due to alpha decay ...

More definitions of "decay":

  • (noun): The organic phenomenon of rotting.
    Synonyms: decomposition
  • (noun): The process of gradually becoming inferior.
  • (verb): Fall into decay or ruin.
    Example: "The unoccupied house started to decay"
    Synonyms: crumble, delapidate
  • (noun): A gradual decrease; as of stored charge or current.
    Synonyms: decline
  • (verb): Undergo decay or decomposition.
    Example: "The body started to decay and needed to be cremated"
  • (noun): The spontaneous disintegration of a radioactive substance along with the emission of ionizing radiation.
    Synonyms: radioactive decay, disintegration

Famous quotes containing the word decay:

    One of the most striking signs of the decay of art is when we see its separate forms jumbled together.
    Johann Wolfgang Von Goethe (1749–1832)

    It had been a moving, tranquil apotheosis, immersed in the transfiguring sunset glow of decline and decay and extinction. An old family, already grown too weary and too noble for life and action, had reached the end of its history, and its last utterances were sounds of music: a few violin notes, full of the sad insight which is ripeness for death.
    Thomas Mann (1875–1955)