Sarin degrades after a period of several weeks to several months.

TNT neither absorbs nor dissolves in water, which allows it to be used effectively in wet environments.

Studying the kinematics of pairs of particles produced by the decay of a parent, such as the Z boson decaying to a pair of electrons or the Higgs boson decaying to a pair of tau leptons or photons, to determine various properties and mass of the parent.

One of the weak particles could decay into an electron and an anti neutrino, and these three still add to zero total charge.

The nine states (nonet) made out of a pair can be decomposed into the trivial representation, 1 (called the singlet), and the adjoint representation, 8 (called the octet).

Many decay into isotopes that are themselves radioactive, so from 1 to 6 (average 3) decays may be required to reach stability.

Para positronium can decay into any even number of photons (2, 4, 6, ...), but the probability quickly decreases with the number the branching ratio for decay into 4 photons is .

Because formaldehyde is a gas at room temperature, formalin formaldehyde gas dissolved in water ( 37 w v) is used when making the former fixative.

Also, the Universe may enter a second inflationary epoch, or, assuming that the current vacuum state is a false vacuum, the vacuum may decay into a lower energy state.

Addition By use of conditional and time dependent radial distribution functions (RDF), it was shown that the hydronium RDF can be decomposed into contributions from two distinct structures, Eigen and Zundel.

Within about 20 minutes of ultraviolet exposure in light skinned individuals (three to six times longer for pigmented skin), the concentrations of vitamin D precursors produced in the skin reach an equilibrium, and any further vitamin D produced is degraded.

A synthetic radioisotope is a radionuclide that is not found in nature no natural process or mechanism exists which produces it, or it is so unstable that it decays away in a very short period of time.